CN111932976A - Assembly, adjustment and detection training platform for control cabinet circuit and electric vehicle driving system - Google Patents
Assembly, adjustment and detection training platform for control cabinet circuit and electric vehicle driving system Download PDFInfo
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- CN111932976A CN111932976A CN202010977735.5A CN202010977735A CN111932976A CN 111932976 A CN111932976 A CN 111932976A CN 202010977735 A CN202010977735 A CN 202010977735A CN 111932976 A CN111932976 A CN 111932976A
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- electronic switch
- motor
- power supply
- output
- switch
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
- H02P1/40—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor in either direction of rotation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
Abstract
The invention discloses a control cabinet circuit and an electric automobile driving system assembling, debugging and detecting training platform.A motor driving simulation power supply is connected with a power supply control module, and the power supply control module is connected with a motor controller; the power supply control module and the motor controller are in communication connection with the upper computer through a communication bus; the power supply control module outputs a first voltage output by a motor driving simulation power supply to the motor controller according to a power supply control signal output by the upper computer, the motor controller controls the motor to make corresponding actions according to various motor control signals output by the upper computer, and the motor controller is connected with the motor through an oscilloscope to observe whether a reducer of a power assembly and the motor have abnormal sound or not in the action process of the motor so as to observe the phase current waveform of a stator winding of the motor and the winding signal waveform of a rotary transformer; the invention realizes that students directly drive, observe and debug the motor on the practical training platform, thereby further mastering the working principle of the power assembly.
Description
Technical Field
The invention relates to the technical field of motor control, in particular to a control cabinet circuit and an electric vehicle driving system assembling, debugging and detecting practical training platform.
Background
The advantages of relatively clean energy used by the electric automobile, low emission, low noise and the like become the first choice for solving the energy and environmental problems, so that the demand of the electric automobile is increased, the electric automobile becomes one of the future development directions of the automobile industry, and along with the vigorous development of the electric automobile industry, the demand of electric automobile technical talents is increased; however, the structure of the electric vehicle power assembly is very complex, and students cannot thoroughly master the working principle of the electric vehicle power assembly only by using written teaching and PPT demonstration teaching; therefore, in the teaching of the working principle of the power assembly of the electric automobile, a student usually carries out the dismounting, mounting and measurement of the power assembly on a practical training platform (a practical training platform with a detachable power assembly) through the power assembly dismounting and mounting practical training platform; however, the working principle of the driving force assembly of the electric automobile cannot be deeply mastered only by mechanically assembling, disassembling and measuring the power assembly.
Disclosure of Invention
The invention mainly aims to provide an assembly, debugging and detection practical training platform for a control cabinet circuit and an electric automobile driving system, and aims to provide driving energy for the assembly, debugging and training platform for a power assembly, drive the assembled power assembly to work and check the assembly of the automobile power assembly, so as to help students to deeply understand the working principle of the electric automobile power assembly.
In order to achieve the above object, the present invention provides a control cabinet circuit for an electric vehicle driving system debugging and detection training platform, wherein the electric vehicle driving system debugging and detection training platform comprises an upper computer, and the control cabinet circuit comprises:
the motor driving analog power supply outputs voltage in proportion to the working voltage of the automobile motor; the motor drives the analog power supply to output a first voltage and a second voltage;
the controlled end of the power supply control module is connected with the upper computer, the input end of the power supply control module is connected with the first voltage, and the power supply control module is used for outputting the first voltage according to a control signal output by the upper computer;
and the motor controller is used for converting the first voltage accessed by the power control module into a motor driving voltage when the power control module is started, and driving the motor to work according to a motor control signal output by the upper computer.
Optionally, the motor-driven analog power supply comprises:
the alternating current input port is used for accessing alternating current;
the input end of the first direct current conversion circuit is connected with the alternating current input port, and the first direct current conversion circuit is used for converting alternating current accessed from the alternating current input port into the first voltage to be output;
and the input end of the second direct current conversion circuit is connected with the alternating current input port, and the second direct current conversion circuit is used for converting the alternating current accessed by the alternating current input port into the second voltage to be output.
Optionally, the motor-driven analog power supply further comprises a leakage switch and an emergency stop switch; the leakage switch and the emergency stop switch are connected in series between the alternating current input port and the first direct current conversion circuit.
Optionally, the motor-driven analog power supply includes a dc power input port, and the dc power output port is connected to an output terminal of the first dc conversion circuit.
Optionally, the power control module includes:
the input end of the power controller is connected with the upper computer, and the power controller is provided with a first output end and a second output end;
the controlled end of the first switch circuit is connected with the first output end of the power controller, the input end of the first switch circuit is connected with the alternating current input port, and the output end of the first switch circuit is connected with the input end of the first direct current conversion circuit;
and the controlled end of the second switching circuit is connected with the second output end of the power controller, the input end of the second switching circuit is connected with the direct current input port, and the output end of the second switching circuit is connected with the power supply end of the motor controller.
Optionally, the first switching circuit comprises a first electronic switch and a second electronic switch; the controlled end of the first electronic switch is connected with the first output end of the power supply controller, the input end of the first electronic switch is connected with the alternating current input port, the output end of the first electronic switch is connected with the controlled end of the second electronic switch, the input end of the second electronic switch is connected with the alternating current input port, and the output end of the second electronic switch is connected with the input end of the first direct current conversion circuit.
Optionally, the second switch circuit includes a third electronic switch and a fourth electronic switch, a controlled terminal of the third electronic switch is connected to a controlled terminal of the fourth electronic switch, and a common terminal of the controlled terminal of the third electronic switch and the controlled terminal of the fourth electronic switch is connected to the second output terminal of the power supply controller; the input end of the third electronic switch is connected with the positive electrode of the direct current input port, and the output end of the third electronic switch is connected with the positive electrode of the power supply end of the motor controller; the input end of the fourth electronic switch is connected with the negative electrode of the direct current input port, and the output end of the fourth electronic switch is connected with the negative electrode of the power supply end of the motor controller.
Optionally, the motor-driven analog power supply further comprises a discharge circuit;
the discharge circuit comprises a fifth electronic switch, a sixth electronic switch and a first resistor;
the input end of the sixth electronic switch is connected with the first resistor, the output end of the sixth electronic switch is connected with the output end of the fifth electronic switch, and the common end of the fifth electronic switch and the sixth electronic switch is connected with the driving voltage input end of the motor controller; the other end of the first resistor is connected with the fifth electronic switch, and the common end of the first resistor and the fifth electronic switch is connected with the output end of the first direct current conversion circuit;
the motor controller further comprises a discharge enabling end and a pre-charge enabling end, the discharge enabling end is connected with the controlled end of the fifth electronic switch, and the pre-charge enabling end is connected with the controlled end of the sixth electronic switch.
Optionally, the motor control module includes a start end, the control cabinet circuit further includes a start-stop delay module, and the start-stop delay module includes a start-stop switch and a delay electronic switch;
the input end of the start-stop switch is connected with the output end of the second direct current conversion circuit, the output end of the start-stop switch is connected with the power end of the motor controller, the controlled end of the delay electronic switch is connected with the input end of the delay electronic switch, the common end of the controlled end and the input end of the delay electronic switch is connected with the output end of the start-stop switch, and the output end of the delay electronic switch is connected with the start end of the motor controller.
The invention further provides an electric vehicle driving system assembling and detecting practical training platform which comprises an upper computer and the control cabinet circuit.
The technical scheme of the invention is that a motor driving simulation power supply, a motor controller and a power supply control module are arranged; the power supply control module and the motor controller are in communication connection with the upper computer through a communication bus; the motor driving simulation power supply is connected with the power supply control module, the power supply control module is connected with the motor controller, the power supply control module outputs a first voltage output by the motor driving simulation power supply to the motor controller according to a power supply control signal output by the upper computer, and the motor controller controls the motor to make corresponding actions such as motor forward rotation, motor reverse rotation, motor acceleration, motor deceleration and the like according to various motor control signals output by the upper computer; whether the speed reducer of the power assembly and the motor have abnormal sound or not is observed in the action process of the motor, so that whether the power assembly is assembled correctly or not is judged; the device can also be connected with a motor through an oscilloscope so as to observe the phase current waveform of a stator winding of the motor and the signal waveform of a winding of a rotary transformer; by analyzing the waveforms, students are helped to further master the working principle of the motor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a circuit diagram of an embodiment of a control cabinet circuit of the present invention;
FIG. 2 is a circuit diagram of another embodiment of a control cabinet circuit of the present invention;
fig. 3 is a circuit diagram of another embodiment of the control cabinet circuit of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a control cabinet circuit.
Referring to fig. 1, in an embodiment, the control cabinet circuit is used for an electric vehicle driving system assembling and detecting practical training platform, the electric vehicle driving system assembling and detecting practical training platform includes an upper computer 10, and the control cabinet circuit includes:
the motor driving analog power supply 20 outputs the voltage output by the motor driving analog power supply 20 in proportion to the working voltage of the automobile motor; the motor driving analog power supply 20 outputs a first voltage and a second voltage;
the controlled end of the power control module 30 is connected with the upper computer 10, the input end of the power control module 30 is connected with the first voltage, and the power control module 30 is used for outputting the first voltage according to the control signal output by the upper computer 10;
and the motor controller 40 is used for switching a power supply end of the motor control into the second voltage, a driving voltage input end of the motor controller 40 is connected with an output end of the power supply control module 30, and the motor controller 40 converts a first voltage switched in by the power supply control module 30 into a motor driving voltage when the power supply control module 30 is started and drives the motor 60 to work according to a motor control signal output by the upper computer 10.
In practical applications, the upper computer 10, the motor controller 40 and the power control module 30 establish communication connection through a communication bus, such as a CAN bus.
The first voltage output by the motor driving analog power supply 20 is proportionally set corresponding to the working voltage of the motor of the automobile, for example, the battery output voltage of the electric automobile is 500V, and correspondingly, the voltage output by the motor driving analog power supply 20 is 72V; the specific reduction ratio can be set according to the actual situation, and certainly in other embodiments, the specific reduction ratio can also be set to output a first voltage in a ratio of 1:1 to the working voltage of the automobile motor so as to realize the rail connection of a teaching end and an industrial end; the first voltage output by the motor driving analog power supply 20 provides a motor driving voltage; the second voltage output by the motor driving analog power supply 20 is used for providing an operating voltage for a chip in the control cabinet circuit, for example, a chip of the motor controller 40 or a chip in the power supply control module 30.
The motor driving analog power supply 20 can be a direct current input port 24 connected with a direct current output device such as a charging pile, a lithium battery or a lead-acid battery, and then outputs a first voltage and a second voltage by matching with different DC-DC circuits; or an ac input port 21, such as a socket or ac input socket, connected to the utility grid or charging gun; outputting a first voltage and a second voltage through different direct current conversion circuits or chips, wherein the commercial power socket can be a 3-hole socket or a 15-hole socket; the first voltage and the second voltage may be direct current; the voltage range of the first voltage may be 30-90V, for example 72V; the voltage range of the second voltage may be 4V-20V, for example 5V or 12V.
The motor controller 40 may include an inverter and a controller, wherein the inverter receives the first voltage from the motor driving analog power source 20 and inverts the first voltage into three-phase alternating current to power the motor 60 to drive the motor 60. The controller supplies power to itself by using the second voltage, receives feedback signals such as the rotation speed of the motor 60, and transmits the feedback signals to the upper computer 10 through the communication bus. The controller is further configured to receive a control signal from the upper computer 10, such as a deceleration control signal or an acceleration control signal, and when the controller receives the signal, the controller controls the frequency of the frequency converter in the inverter to increase or decrease, so as to achieve the purpose of controlling the motor 60 to accelerate or decelerate.
The power control module 30 can be implemented by using a power controller 31 in cooperation with a switching circuit; the power control module 30 is connected with a communication bus, the upper computer 10 sends power control signals such as a power supply signal or a power supply stopping signal to the power control module 30 through the communication bus, and the power control module 30 outputs a first voltage to the motor controller 40 after receiving the power supply signal and feeds back information that the first voltage is output to the motor controller 40 through the communication bus; after receiving the power supply stop signal, the power control module 30 cuts off the connection with the motor controller 40, stops outputting the first voltage value, and feeds back information that the first voltage stops being output to the motor controller 40 through the communication bus.
The upper computer 10 may be a computer or other intelligent devices with a display and a mouse, in an embodiment, the upper computer 10 includes a display, the upper computer 10 is connected to a communication bus, and the upper computer 10 displays a received feedback signal to a user through a visual interface, so that the user can output a corresponding control signal to the motor controller 40 and the power control module 30 through an external device such as a mouse, a keyboard, or a touch screen according to the feedback signal, for example, output a power supply starting signal or a power supply stopping signal to the power control module 30 to control the power control module 30, thereby controlling the analog driving power supply to perform corresponding actions such as starting power supply, stopping power supply, and the like; for another example, a start motor forward rotation signal, a start motor reverse rotation signal, a motor acceleration signal, a motor deceleration signal, etc. are output to the motor controller 40 to control the motor 60 to rotate forward, the motor 60 to rotate reversely, the motor 60 to accelerate, and the motor 60 to decelerate, so that students can verify whether the power assembly is successfully assembled or disassembled by observing the rotation of the motor 60.
The technical scheme of the invention is that a motor driving analog power supply 20, a motor controller 40 and a power supply control module 30 are arranged; the power control module 30 and the motor controller 40 are in communication connection with the upper computer 10 through a communication bus; the motor driving analog power supply 20 is connected with the power supply control module 30, and the power supply control module 30 is connected with the motor controller 40; the power control module 30 outputs a first voltage output by the motor driving analog power supply 20 to the motor controller 40 according to a power control signal output by the upper computer 10 and feeds back information whether the first voltage is successfully output to the motor controller 40 to the upper computer 10; thereby supplying a driving voltage to the motor controller 40; after confirming that the first voltage is output to the motor controller 40, the student can output a motor control signal to the motor controller 40 through the upper computer 10, the motor controller 40 controls the motor 60 to make corresponding actions such as forward rotation of the motor 60, reverse rotation of the motor 60, acceleration of the motor 60, deceleration of the motor 60 and the like according to various motor 60 control signals output by the upper computer 10, and feeds back operation information of the motor 60 such as the rotating speed of the motor 60 and the like to the upper computer 10, and in the action process of the motor 60, the student observes whether the reducer of the power assembly and the motor 60 have abnormal sound, so as to judge whether the power assembly is assembled correctly; according to the invention, the voltage output by the motor driving simulation power supply 20 is output in proportion to the working voltage of the automobile motor 60, so that when students are in practical training, the motor 60 with the voltage set in equal proportion is controlled to work, the automobile motor 60 can be equivalently controlled to work, and the safety of the motor 60 in control and the operability of the motor 60 in control are favorably improved. The voltage output by the motor driving analog power supply 20 is output in proportion to the working voltage of the automobile motor, so that when the driving motor 60 works, the phase current waveform of the stator winding of the motor 60 and the winding signal waveform of the rotary transformer can be visually observed through a detection device such as an oscilloscope and the like; by analyzing the waveforms, the students are helped to further master the working principle of the automobile motor 60.
Referring to fig. 2, in one embodiment, the motor-driven analog power supply 20 includes:
an ac input port 21 for receiving ac power;
the input end of the first direct current conversion circuit 22 is connected with the alternating current input port 21, and the first direct current conversion circuit 22 is configured to convert alternating current input from the alternating current input port 21 into the first voltage for output;
and an input end of the second dc conversion circuit 23 is connected to the ac power input port 21, and the second dc conversion circuit 23 is configured to convert ac power input from the ac power input port 21 into the second voltage and output the second voltage.
In this embodiment, the first DC conversion circuit 22 and the second DC conversion circuit 23 may be AC-DC circuits or chips, and the AC input port 21 may be a socket or an AC input socket, and is connected to a utility grid or a charging gun; wherein, the socket can be a 3-hole socket or a 15-hole socket; the alternating current input seat can be directly connected with the charging gun; the alternating current input port 21 is connected with alternating current, the alternating current flows through the first direct current conversion circuit 22 and is converted into first voltage to the motor controller 40 so as to provide driving voltage of the motor 60, and the alternating current flows through the second direct current conversion circuit 23 and is converted into second voltage to be output to the control cabinet circuit so as to supply power to active devices in the control cabinet circuit; the second direct current conversion circuit 23 is arranged to output the second voltage to supply power to the active device of the control cabinet circuit, so that extra voltage supply to the active device is avoided, power interfaces are reduced, or a power supply source is reduced, and cost is reduced.
Referring to fig. 2, further, the motor-driven analog power supply 20 includes a dc input port 24, and the dc output port is connected to an output terminal of the first dc conversion circuit 22.
The direct current input port 24 may be connected to a direct current output device such as a charging pile, a lithium battery, a lead-acid battery, or the like, and may be configured to directly output a second voltage; the first voltage can also be output by matching with a DC-DC circuit. It is understood that, when the ac power input port 21 or the first dc converting circuit 22 fails, for example, a power failure, and the first dc converting circuit 22 fails to output the first voltage, the dc power input port 24 may be connected to dc power to output the first voltage. That is, the circuit of the control cabinet can be connected with alternating current and also can be connected with direct current, thereby increasing the compatibility of the circuit of the control cabinet.
Referring to fig. 3, in one embodiment, the motor-driven analog power supply 20 further includes a leakage switch 25 and an emergency stop switch 26; the leakage switch 25 and the emergency stop switch 26 are connected in series between the ac input port 21 and the first dc conversion circuit 22.
When the motor driving simulation power supply 20 leaks electricity, the electricity leakage switch 25 is switched off, so that the equipment and personal safety is ensured, and the safety in motor control is improved; the leakage operation current of the leakage switch 25 is 10 to 20A, for example, 16A.
In case of a fault or emergency, the emergency stop switch 26 can be directly turned off to cut off the power supply in time, thereby ensuring the safety of equipment and personnel.
Referring to fig. 2 and 3, in one embodiment, the power control module 30 includes:
the input end of the power controller 31 is connected with the upper computer 10, and the power controller 31 is provided with a first output end and a second output end;
a first switch circuit 32, a controlled end of the first switch circuit 32 is connected to a first output end of the power controller 31, an input end of the first switch circuit 32 is connected to the ac power input port 21, and an output end of the first switch circuit 32 is connected to an input end of the first dc converter circuit 22;
and a second switch circuit 33, a controlled end of the second switch circuit 33 is connected to a second output end of the power controller 31, an input end of the second switch circuit 33 is connected to the dc input port 24, and an output end of the second switch circuit 33 is connected to a power end of the motor controller 40.
In this embodiment, the power controller 31 is in communication connection with the upper computer 10 through a communication bus, the upper computer 10 sends power control signals such as an ac power supply signal, a dc power supply signal, or a power supply stop signal to the power controller 31 through the communication bus, and the power control module 30 controls the first switch circuit 32 to be turned on after receiving the ac power supply signal, so as to connect the ac power input port 21 and the first dc conversion circuit 22; the first direct current conversion circuit 22 converts the alternating current into a first voltage and outputs the first voltage to the motor controller 40, and meanwhile, the power controller 31 feeds back information that the alternating current input port 21 starts to work through the communication bus; after receiving the dc power supply signal, the power control module 30 controls the second switch circuit 33 to be turned on, so as to connect the dc power input port 24 and the motor controller 40, and at the same time, the power controller 31 feeds back information that the dc power input port 24 starts to work through the communication bus; after receiving the power supply stop signal, the power control module 30 turns off the first switch circuit 32 and the second switch circuit 33, thereby cutting off the connection between the analog driving power and the motor controller 40, stopping outputting the first voltage to the motor controller 40, and feeding back information that the first voltage stops being output to the motor controller 40 through the communication bus. The embodiment selects to control the power supply of the direct current input port 24 or the power supply of the alternating current input port 21 by arranging the first switch circuit 32 and the second switch circuit 33; the problem that the motor controller 40 is burnt out due to overlarge output current of the analog driving power supply caused by the fact that the direct current input port 24 and the alternating current input port 21 are simultaneously connected with the power supply and output the first voltage can be avoided.
Referring to fig. 3, in one embodiment, the first switch circuit 32 includes a first electronic switch 321 and a second electronic switch 322; the controlled end of the first electronic switch 321 is connected to the first output end of the power controller 31, the input end of the first electronic switch 321 is connected to the ac input port 21, the output end of the first electronic switch 321 is connected to the controlled end of the second electronic switch 322, the input end of the second electronic switch 322 is connected to the ac input port 21, and the output end of the second electronic switch 322 is connected to the input end of the first dc conversion circuit 22.
The alternating current input port 21 is provided with a fire wire end, a zero wire end and a ground wire end; the first dc conversion circuit 22 has a live wire input end, a zero line input end, and a ground wire end; the first electronic switch 321 and the second electronic switch 322 may be implemented by using a relay or a contactor, specifically, the first electronic switch 321 may be a normally open dc relay, and the second electronic switch 322 may be a single-pole double-throw normally open ac relay; the first electronic switch 321 and the second electronic switch 322 are respectively marked as a first relay and a second relay, wherein one end of a coil of the first relay is connected with a first output end of the power controller 31, the other end of the coil of the first relay is grounded, a movable contact of the first relay is connected with a live wire end of the alternating current input port 21, a stationary contact of the first relay is connected with one end of a coil of the second relay, the other end of the coil of the second relay is connected with a zero wire end of the alternating current input port 21, two linked movable contacts of the second relay are respectively connected with a zero wire end and a live wire end of the alternating current input port 21 one by one, and two stationary contacts of the second relay are respectively connected with a live wire input end and a zero wire input end of the first direct current conversion circuit 22;
when no control signal is output from the first end of the power supply controller 31, no current flows through the coil end of the first relay, and the movable contact and the fixed contact of the first relay are separated, so that no current flows through the coil end of the second relay, and the two movable contacts and the two fixed contacts of the second relay are separated; when a control signal is output from the first end of the power controller 31, current flows through the coil end of the first relay, the movable contact and the fixed contact of the first relay are connected, at this time, the voltage output from the alternating current input port 21 flows through the coil of the second relay, the two linkage movable contacts of the second relay are connected with the two fixed contacts, namely, the live wire end of the alternating current input port 21 is connected with the live wire input end of the first direct current conversion circuit 22, and the zero wire end of the alternating current input port 21 is connected with the zero wire input end of the first direct current conversion circuit 22, so that the alternating current is output to the first direct current conversion circuit 22.
The present embodiment utilizes the first electronic switch 321 as an intermediate electronic switch to indirectly control the second electronic switch 322, and the intermediate electronic switch is configured to isolate the ac power output from the ac power input port 21 from the power controller 31, thereby eliminating the influence of the ac power output from the ac power input port 21 on the power controller 31.
Referring to fig. 3, in an embodiment, the second switch circuit 33 includes a third electronic switch 331 and a fourth electronic switch 332, a controlled terminal of the third electronic switch 331 is connected to a controlled terminal of the fourth electronic switch 332, and a common terminal of the controlled terminal of the third electronic switch 331 and the controlled terminal of the fourth electronic switch 332 is connected to the second output terminal of the power controller 31; the input end of the third electronic switch 331 is connected to the positive electrode of the dc power input port 24, and the output end of the third electronic switch 331 is connected to the positive electrode of the power supply terminal of the motor controller 40; the input terminal of the fourth electronic switch 332 is connected to the negative terminal of the dc input port 24, and the output terminal of the fourth electronic switch 332 is connected to the negative terminal of the power supply terminal of the motor controller 40.
The third electronic switch 331 and the fourth electronic switch 332 may be implemented by using a relay or a contactor, and in this embodiment, both the third electronic switch 331 and the fourth electronic switch 332 may be normally open relays; the third relay and the fourth relay are marked as a third relay and a fourth relay, and when no control signal is output from the second output end of the power controller 31, the third relay and the fourth relay are normally opened, so that the connection between the direct current input port 24 and the motor controller 40 is disconnected; when a control signal is output from the second output end of the power controller 31, the third relay and the fourth relay are closed, so that the direct current input port 24 and the motor controller 40 are connected; thereby outputting the direct current to the motor controller 40.
In the embodiment, the third electronic switch 331 and the fourth electronic switch 332 are respectively arranged at the positive pole and the negative pole of the direct current input port 24, so that the connection between the direct current input port 24 and the motor controller 40 is cut off more thoroughly; it is also possible to prevent one of the third electronic switch 331 and the fourth electronic switch 332 from being normally opened to cut off the path between the dc power input port 24 and the motor controller 40 to stop the operation of the motor 60 when any one of the third electronic switch 331 and the fourth electronic switch 332 fails, thereby improving the safety of the control process of the motor 60.
Referring to fig. 2 and 3, in one embodiment, the motor-driven analog power supply 20 further includes a discharge circuit 27;
the discharged circuit 27 includes a fifth electronic switch 271, a sixth electronic switch 272 and a first resistor 273;
an input end of the sixth electronic switch 272 is connected to the first resistor 273, an output end of the sixth electronic switch 272 is connected to an output end of the fifth electronic switch 271, and a common end of the fifth electronic switch 271 and the sixth electronic switch 272 is connected to a driving voltage input end of the motor controller 40; the other end of the first resistor 273 is connected to the fifth electronic switch 271, and a common end of the first resistor 273 and the fifth electronic switch 271 is connected to an output end of the first dc conversion circuit 22;
the motor controller 40 further includes a discharge enable terminal connected to the controlled terminal of the fifth electronic switch 271, and a precharge enable terminal connected to the controlled terminal of the sixth electronic switch 272.
The fifth electronic switch 271 and the sixth electronic switch 272 may be relays or contactors, and in this embodiment, may be normally open relays;
the motor controller 40 is in communication connection with the upper computer 10 through a communication bus, and a user controls the sixth electronic switch 272 and the fifth electronic switch 271 to be turned on/off through the upper computer 10; the upper computer 10 may be provided with a display interface, a user outputs a control signal to the upper computer 10 through a mouse, a keyboard or a touch screen, the upper computer 10 outputs the control signal to the motor controller 40 through a communication bus, the motor controller 40 outputs a discharge enable signal and a precharge enable signal according to the control signal to turn on the corresponding fifth electronic switch 271 and sixth electronic switch 272, in practical applications, the sixth relay may be controlled to be turned on by the upper computer 10 to perform precharge, the motor controller is prevented from being damaged by the precharge, then the user may calculate the time required for the precharge by himself or judge whether the precharge is completed through data displayed by the upper computer 10, if the precharge is completed, the upper computer 10 controls the sixth electronic switch 272 to be turned off, and controls the fifth electronic switch 271 to be turned on to supply power to the motor controller 40, through the above pre-charging and power-supplying processes, the user is helped to further understand the principle of the analog driving power supply supplying power to the motor controller 40.
Referring to fig. 2 and 3, in one embodiment, the motor control module includes an activation end,
the motor control module comprises a starting end, the control cabinet circuit further comprises a start-stop delay module 50, and the start-stop delay module 50 comprises a start-stop switch 51 and a delay electronic switch 52;
the input end of the start-stop switch 51 is connected with the output end of the second dc conversion circuit 23, the output end of the start-stop switch 51 is connected with the power supply end of the motor controller 40, the controlled end of the delay electronic switch 52 is connected with the input end, the common end of the controlled end and the input end of the delay electronic switch 52 is connected with the output end of the start-stop switch 51, and the output end of the delay electronic switch 52 is connected with the start end of the motor controller 40.
The start-stop switch 51 may be a key switch or a toggle switch, and this embodiment may be a key switch; the delay electronic switch 52 can be selected as a delay relay, and the delay time of the delay relay can be adjusted to 0.5-5S, for example 2S; when the key switch is pressed down, the key switch is turned on, the second voltage is output to a power supply end of the motor controller 40, meanwhile, the second voltage is also output to a coil end of a delay relay, and the delay relay is attracted after 2 seconds, so that the second voltage is output to a starting end of the motor controller 40; that is, there is a 2S delay between the power supply terminal of the second voltage output to the motor controller 40 and the start terminal of the second voltage output to the motor controller 40, and the 2S delay can be used for the motor controller 40 to erase future and erased data of the last power failure and to perform initialization; so that the motor controller 40 can operate more stably.
The invention also provides an electric vehicle driving system assembling and detecting practical training platform, which comprises an upper computer 10 and the control cabinet circuit; the specific structure of the control cabinet circuit refers to the above embodiments, and the control cabinet circuit adopts all technical schemes of all the above embodiments, so that the electric vehicle driving system assembling, debugging and detecting practical training platform at least has all beneficial effects brought by the technical schemes of the above embodiments, and is not repeated herein.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a switch board circuit for real platform of instructing of electric automobile actuating system installation and test, real platform of instructing of electric automobile actuating system installation and test includes the host computer, its characterized in that, the switch board circuit includes:
the motor driving analog power supply outputs voltage in proportion to the working voltage of the automobile motor; the motor drives the analog power supply to output a first voltage and a second voltage;
the controlled end of the power supply control module is connected with the upper computer, the input end of the power supply control module is connected with the first voltage, and the power supply control module is used for outputting the first voltage according to a control signal output by the upper computer;
and the motor controller is used for converting the first voltage accessed by the power control module into a motor driving voltage when the power control module is started, and driving the motor to work according to a motor control signal output by the upper computer.
2. The control cabinet circuit according to claim 1, wherein the motor-driven analog power supply comprises:
the alternating current input port is used for accessing alternating current;
the input end of the first direct current conversion circuit is connected with the alternating current input port, and the first direct current conversion circuit is used for converting alternating current accessed from the alternating current input port into the first voltage to be output;
and the input end of the second direct current conversion circuit is connected with the alternating current input port, and the second direct current conversion circuit is used for converting the alternating current accessed by the alternating current input port into the second voltage to be output.
3. The control cabinet circuit according to claim 2, wherein the motor-driven analog power supply further comprises a leakage switch and an emergency stop switch; the leakage switch and the emergency stop switch are connected in series between the alternating current input port and the first direct current conversion circuit.
4. The control cabinet circuit according to claim 2, further comprising the motor drive analog power supply including a dc power input, the dc power output being connected to the output of the first dc converter circuit.
5. The control cabinet circuit according to claim 4, wherein the power control module comprises:
the input end of the power controller is connected with the upper computer, and the power controller is provided with a first output end and a second output end;
the controlled end of the first switch circuit is connected with the first output end of the power controller, the input end of the first switch circuit is connected with the alternating current input port, and the output end of the first switch circuit is connected with the input end of the first direct current conversion circuit;
and the controlled end of the second switching circuit is connected with the second output end of the power controller, the input end of the second switching circuit is connected with the direct current input port, and the output end of the second switching circuit is connected with the power supply end of the motor controller.
6. The control cabinet circuit according to claim 5, wherein the first switch circuit comprises a first electronic switch and a second electronic switch; the controlled end of the first electronic switch is connected with the first output end of the power supply controller, the input end of the first electronic switch is connected with the alternating current input port, the output end of the first electronic switch is connected with the controlled end of the second electronic switch, the input end of the second electronic switch is connected with the alternating current input port, and the output end of the second electronic switch is connected with the input end of the first direct current conversion circuit.
7. The control cabinet circuit according to claim 5, wherein the second switch circuit comprises a third electronic switch and a fourth electronic switch, a controlled terminal of the third electronic switch is connected with a controlled terminal of the fourth electronic switch, and a common terminal of the controlled terminal of the third electronic switch and the controlled terminal of the fourth electronic switch is connected with the second output terminal of the power supply controller; the input end of the third electronic switch is connected with the positive electrode of the direct current input port, and the output end of the third electronic switch is connected with the positive electrode of the power supply end of the motor controller; the input end of the fourth electronic switch is connected with the negative electrode of the direct current input port, and the output end of the fourth electronic switch is connected with the negative electrode of the power supply end of the motor controller.
8. The control cabinet circuit according to claim 2, wherein the motor-driven analog power supply further comprises a discharge circuit;
the discharge circuit comprises a fifth electronic switch, a sixth electronic switch and a first resistor;
the input end of the sixth electronic switch is connected with the first resistor, the output end of the sixth electronic switch is connected with the output end of the fifth electronic switch, and the common end of the fifth electronic switch and the sixth electronic switch is connected with the driving voltage input end of the motor controller; the other end of the first resistor is connected with the fifth electronic switch, and the common end of the first resistor and the fifth electronic switch is connected with the output end of the first direct current conversion circuit;
the motor controller further comprises a discharge enabling end and a pre-charge enabling end, the discharge enabling end is connected with the controlled end of the fifth electronic switch, and the pre-charge enabling end is connected with the controlled end of the sixth electronic switch.
9. The control cabinet circuit according to any one of claims 2 to 7, wherein the motor control module comprises a start-up terminal, the control cabinet circuit further comprising a start-stop delay module, the start-stop delay module comprising a start-stop switch and a delay electronic switch;
the input end of the start-stop switch is connected with the output end of the second direct current conversion circuit, the output end of the start-stop switch is connected with the power end of the motor controller, the controlled end of the delay electronic switch is connected with the input end of the delay electronic switch, the common end of the controlled end and the input end of the delay electronic switch is connected with the output end of the start-stop switch, and the output end of the delay electronic switch is connected with the start end of the motor controller.
10. An electric vehicle driving system assembling and detecting practical training platform is characterized by comprising an upper computer and a control cabinet circuit according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010977735.5A CN111932976A (en) | 2020-09-17 | 2020-09-17 | Assembly, adjustment and detection training platform for control cabinet circuit and electric vehicle driving system |
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| CN202010977735.5A CN111932976A (en) | 2020-09-17 | 2020-09-17 | Assembly, adjustment and detection training platform for control cabinet circuit and electric vehicle driving system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393732A (en) * | 2021-07-05 | 2021-09-14 | 广州宣成教育科技有限公司 | Alternating current charging practical training system and method for new energy automobile |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393732A (en) * | 2021-07-05 | 2021-09-14 | 广州宣成教育科技有限公司 | Alternating current charging practical training system and method for new energy automobile |
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