CN115437282A - Control system for controlling electromagnetic welding - Google Patents
Control system for controlling electromagnetic welding Download PDFInfo
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- CN115437282A CN115437282A CN202210989883.8A CN202210989883A CN115437282A CN 115437282 A CN115437282 A CN 115437282A CN 202210989883 A CN202210989883 A CN 202210989883A CN 115437282 A CN115437282 A CN 115437282A
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The application provides a control system for controlling electromagnetic welding, which is used for controlling electromagnetic welding equipment, outputs a target oscillation frequency through a phase shift frequency control module to output a target pulse signal, receives the target pulse signal through an H-bridge driving module, and responds to the target pulse signal to output a target voltage and a target current; outputting a high-frequency electric signal when a target current and a target voltage are applied through a resonant assembly driving module; generating a high-frequency eddy current when a high-frequency electric signal is conducted through the electromagnetic induction module, so as to generate variable magnetic flux, adjusting the welding frequency of the electromagnetic welding equipment to be consistent with a target oscillation frequency, and adjusting the current of the electromagnetic welding equipment to be consistent with a target current; in the embodiment of the application, after the electric signal of the target oscillation frequency is input into the phase shift frequency control module, the phase shift frequency control module can output the corresponding target pulse signal, so that the automatic adjustment of the adjustment potentiometer is realized.
Description
Technical Field
The application relates to the technical field of welding of solar cell string bus bars and electromagnetic welding, in particular to a control system for controlling electromagnetic welding.
Background
In the production process of the solar cell module, in order to adapt to the technological requirements of different module customers and meet the requirements of module production bus bar welding, due to the fact that individualized differences of length, thinness and thickness exist in the bus bar welding size, the electromagnetic welding device is required to change the frequency and current of high-frequency electromagnetic welding according to the distribution of magnetic cores of electromagnetic welding heads and the change of the number of the magnetic cores, and therefore the actual requirements of various module bus bar welding are further adapted.
In the prior art, the resonance frequency of the high-frequency electromagnetic welding system is changed by a method of manually adjusting a potentiometer, so that the actual result of changing the frequency and current output of the electromagnetic welding cannot meet the requirement of automatic digital control tracking adjustment.
Disclosure of Invention
The invention provides a control system for controlling electromagnetic welding, which has the characteristics of meeting the requirement of intelligent automatic tracking control and improving the convenience and intellectualization of adjustment. The specific scheme is as follows:
the embodiment of the application provides a control system for controlling electromagnetic welding for control electromagnetic welding equipment, the system includes:
the phase shift frequency control module is used for outputting a target pulse signal based on a target oscillation frequency, wherein the target oscillation frequency is determined according to the difference between a target working frequency and an actual working frequency, and the target working frequency is a frequency corresponding to a target working current;
the H-bridge driving module is used for receiving the target pulse signal and responding to the target pulse signal to output a target voltage and a target current;
the resonant component driving module comprises an isolation transformer and a resonant capacitor, and is used for outputting a high-frequency electric signal when the target current and the target voltage are applied;
and the electromagnetic induction module comprises a magnetic core and a coil which passes through the periphery of the magnetic core and is used for generating high-frequency eddy current when the high-frequency electric signal is electrified so as to generate variable magnetic flux, so that the welding frequency of the electromagnetic welding equipment is adjusted to be consistent with the target oscillation frequency, and the current of the electromagnetic welding equipment is adjusted to be consistent with the target current.
Optionally, the control system further includes:
the isolation control module is used for responding to the phase difference of the target pulse signal to determine an output signal, and the output signal can reflect the characteristic information of the target oscillation frequency;
the H-bridge driving module is specifically configured to output a target voltage and a target current in response to the output signal.
Optionally, the control system further includes:
the frequency tracking module comprises a frequency output tracking circuit and is used for controlling the phase shift frequency control module to output a target working frequency;
and the phase shift frequency control module is used for outputting a target pulse signal based on a target oscillation frequency on the premise of outputting the target working frequency.
Optionally, the control system further includes:
the frequency tracking detection sensor comprises a mutual inductor for detecting the current of the coil in real time, wherein the mutual inductor is used for feeding back a frequency signal and a current signal of the coil in real time and outputting the frequency signal and the current signal of the coil to the frequency tracking module;
the frequency tracking module is specifically configured to control the phase shift frequency control module to output a target operating frequency according to the frequency signal and the current signal of the coil.
Optionally, the control system further includes:
the frequency tracking correction module comprises a frequency correction adjusting circuit used for adjusting the target working frequency output by the phase shift frequency control module according to the set working frequency.
Optionally, the control system further includes:
and the frequency adjusting module comprises a frequency adjusting circuit and is used for adjusting the working frequency of the electromagnetic welding equipment.
Optionally, the frequency adjustment circuit includes:
the voltage controlled oscillator VCO is used for generating a signal of a target frequency and performing frequency doubling shaping on the signal of the target frequency, and the target frequency is used for determining the working frequency of the electromagnetic welding equipment;
the UCC3895 chip comprises a SYNC synchronous port, the signal subjected to frequency doubling shaping is subjected to phase shifting and dead zone control through the SYNC synchronous port of the UCC3895 chip, and then a PWM driving signal is output and used for adjusting the working frequency of electromagnetic welding equipment.
Optionally, the control system further includes:
and the current adjusting module comprises a current detection amplifying circuit and a current comparator and is used for controlling the output current of the electromagnetic welding equipment not to exceed a set current.
Optionally, the current regulation module (10) circuitry comprises a peak current control circuit of UCC 3895;
the peak current control circuit comprises a current transformer and a RAMP port, and is configured to sample a current through the current transformer to obtain a current signal, send the current signal to the RAMP port of the UCC3895 to perform peak current control, so that the current does not exceed a set current, and thus current limiting is performed, where the peak current control process is as follows: and when the current is detected to be out of limit, the PWM wave of the current period is switched off so as to realize cycle-by-cycle current control.
Optionally, the peak current control circuit is specifically configured to implement stable current adjustment by continuously adjusting the phase shift angle at 0 to 180 degrees, so that the current is always in a resonant state.
Optionally, the control system further includes:
the current tracking detection module comprises a current detection amplifying circuit and an analog-to-digital conversion circuit, and has a software analysis function and is used for detecting the working current of the welding equipment and sending the current to the current adjustment module.
Optionally, the control system further includes:
and the voltage tracking detection module comprises a voltage detection amplifying circuit and an analog-to-digital conversion circuit, and has a software analysis function and is used for detecting the working voltage of the welding equipment.
Optionally, the control system further includes:
and the cooling system is used for cooling the coil, the magnetic core, the ventilation air duct of the H-bridge driving module and the heat conducting device.
Optionally, the control system further includes:
the power supply module comprises a single-phase alternating current input filter, a full-bridge rectification system, a direct current output filtering system, an output voltage adjusting system and an output current detection and protection system, and the power supply module is used for supplying power to the electromagnetic welding equipment.
Optionally, the control system further includes:
and the control module comprises a period and a gradient for determining a set working frequency, a set working current and a tracking frequency, is used for controlling the current tracking detection module and the voltage tracking detection module to detect the working voltage and current of the electromagnetic welding equipment, and is used for controlling the cooling system to cool the electromagnetic welding equipment according to the working temperature of the electromagnetic welding equipment.
Optionally, the control system further includes:
and the communication interface module comprises a communication isolation device, a communication state indication device and a level conversion device, and is used for carrying out data interaction with the control module.
Optionally, the control system further includes:
and the external IO starting module comprises an isolation device and is used for controlling the starting, finishing and running time of the electromagnetic welding equipment.
Compared with the prior art, the method has the following advantages:
the embodiment of the application provides a control system for controlling electromagnetic welding for control electromagnetic welding equipment, the system includes: the phase shift frequency control module is used for outputting a target pulse signal based on a target oscillation frequency, wherein the target oscillation frequency is determined according to the difference between a target working frequency and an actual working frequency, and the target working frequency is a frequency corresponding to a target working current; the H-bridge driving module is used for receiving the target pulse signal and responding to the target pulse signal to output a target voltage and a target current; the resonant component driving module comprises an isolation transformer and a resonant capacitor, and is used for outputting a high-frequency electric signal when the target current and the target voltage are applied; and the electromagnetic induction module comprises a magnetic core and a coil which passes through the periphery of the magnetic core and is used for generating high-frequency eddy current when the high-frequency electric signal is electrified so as to generate variable magnetic flux, so that the welding frequency of the electromagnetic welding equipment is adjusted to be consistent with the target oscillation frequency, and the current of the electromagnetic welding equipment is adjusted to be consistent with the target current.
The above-mentioned target operating frequency is an operating frequency of the electromagnetic welding apparatus required to weld the target bus bar welding size, that is, to achieve the target bus bar welding size, the electromagnetic welding apparatus is required to weld at the target operating frequency. The actual operating frequency is the current actual operating frequency of the electromagnetic welding apparatus. The target oscillation frequency may be a difference between the actual operating frequency and the target operating frequency. In the embodiment of the application, after the electric signal of the target oscillation frequency is input into the phase shift frequency control module, the phase shift frequency control module can output the corresponding target pulse signal, so that the automatic adjustment of the adjustment potentiometer is realized.
Drawings
FIG. 1 is a block diagram of a control system for controlling electromagnetic welding according to an embodiment of the present disclosure;
fig. 2 schematically illustrates a circuit connection diagram of a frequency adjustment module in an exemplary embodiment of the present disclosure;
figure 3 schematically illustrates a peak current control circuit connection diagram for UCC3895 of a current regulation module in an exemplary embodiment of the present disclosure;
figure 4 schematically illustrates a phase shift angle adjustment circuit connection diagram for a UCC3895 chip in an exemplary embodiment of the disclosure;
FIG. 5 schematically illustrates a circuit connection diagram of a phase shift frequency control module in an exemplary embodiment of the disclosure;
FIG. 6 schematically illustrates an adjustment schematic of a phase shift frequency control module in an exemplary embodiment of the disclosure;
FIG. 7 schematically illustrates a composition diagram of an electronic device in an exemplary embodiment of the disclosure;
fig. 8 schematically illustrates a composition diagram of a storage medium in an exemplary embodiment of the present disclosure.
Fig. 9 schematically illustrates a circuit connection diagram of one embodiment of the present disclosure employing a UCC3895 chip.
Reference numerals: 1. a phase shift frequency control module; 2.H bridge driving module; 3. a resonant assembly drive module; 4. an electromagnetic induction module; 5. an isolation control module; 6. a frequency tracking module; 7. a frequency tracking detection sensor; 8. a frequency tracking correction module; 9. a frequency adjustment module; 10. a current adjustment module; 11. a current tracking detection module; 12. a voltage tracking detection module; 13. a cooling system; 14. a power supply module; 15. a control module; 16. a communication interface module; 17. an external IO start module; 100. an external device; 200. an electronic device; 220. a storage unit; 2201. a random access memory unit RAM;2202. a cache storage unit; 2203. a read only memory cell ROM;2204. a program/utility tool; 2205. a program module; 230. a bus; 240. a display unit; 250. an input/output I/O interface; 260. a network adapter; 300. a program product.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit of this application and is therefore not limited to the specific implementations disclosed below.
In the production process of the solar cell module, the bus bar is often required to be welded on the cell module, in order to adapt to the technological requirements of different cell module customers, because the welding size of the bus bar usually has individual differences of length, thickness, and the like, in order to meet the individual differences, the frequency and the current of high-frequency electromagnetic welding are required to be changed according to the distribution of magnetic cores of an electromagnetic welding head of an electromagnetic welding device and the change of the number of the magnetic cores, and then the actual requirements of the welding of the bus bar of different cell modules are adapted.
In the prior art, it is common to change the resonant frequency of a high frequency electromagnetic welding system, as well as to change the frequency and current of the electromagnetic welding, by manually adjusting a potentiometer. The mode can not well meet the requirement of automatic control tracking adjustment, so that the automation degree of the welding process is lower, and the welding efficiency is lower.
Based on the above reasons, in order to better satisfy the demand of tracking and adjusting by automatic control and improve the automation degree of the welding process, thereby improving the welding efficiency and making the battery production efficiency higher, the first embodiment of the present application provides a control system for controlling electromagnetic welding, which is used for controlling an electromagnetic welding device, which may include an electromagnetic welding head.
The control system includes: the device comprises a phase shift frequency control module 1, an H bridge driving module 2, a resonance component driving module 3 and an electromagnetic induction module 4.
The phase shift frequency control module 1 is configured to output a target pulse signal based on a target oscillation frequency. The target oscillation frequency is determined based on a difference between the target operating frequency and the actual operating frequency. A specific circuit structure of the phase shift frequency control module 1 may be as shown in fig. 5.
The above-mentioned target operating frequency is an operating frequency of the electromagnetic welding apparatus required to weld the target bus bar welding size, that is, to achieve the target bus bar welding size, the electromagnetic welding apparatus is required to weld at the target operating frequency. The actual operating frequency is the current actual operating frequency of the electromagnetic welding apparatus. The target oscillation frequency may be a difference between the actual operating frequency and the target operating frequency. In the embodiment of the present application, after the electrical signal of the target oscillation frequency is input to the phase shift frequency control module 1, the phase shift frequency control module 1 can output a corresponding target pulse signal.
In one embodiment, the phase shift frequency control module 1 is specifically configured to output a target pulse signal with a certain phase difference and a fixed frequency in real time, and as shown in fig. 6, a schematic diagram of a plurality of pulse signals with different waveforms that can be output by the phase shift frequency control module 1 in this embodiment of the present application is shown.
The H-bridge driving module 2 is configured to receive a target pulse signal and output a target voltage and a target current in response to the target pulse signal. Specifically, after the target pulse signal is input to the H-bridge driving module 2, the H-bridge driving module 2 can output a target voltage and a target current.
In a specific embodiment, the H-bridge driver module 2 includes a driver chip, and after acquiring the target pulse signal, the driver chip may respond to the target pulse signal to satisfy the purpose that the gate voltage is sufficiently saturated and conducted, so that the source and the drain are conducted by a conductor, and thus sufficient voltage and current, that is, the target voltage and the target current, can flow through the H-bridge driver module 2.
The resonant component driving module 3 includes an isolation transformer and a resonant capacitor, and the resonant component driving module 3 is configured to output a high-frequency electrical signal when the electrical signal of the target current and the target voltage is applied. That is, when the electric signals of the target current and the target voltage are input to the resonant-component driving module 3, the corresponding high-frequency electric signals can be output under the combined action of the isolation transformer and the resonant capacitor of the resonant-component driving module 3.
The resonant component driving module 3 is specifically configured to input a target current and a target voltage into an isolation transformer, so as to output a high-frequency electrical signal, and the high-frequency electrical signal is used to input the electromagnetic induction module 4 after passing through a resonant capacitor.
The electromagnetic induction module 4 includes a magnetic core and a coil passing around the magnetic core, and is configured to generate a high-frequency eddy current when a high-frequency electric signal is applied thereto, so as to generate a variable magnetic flux, thereby adjusting a welding frequency of the electromagnetic welding apparatus to be consistent with a target operating frequency. Since the high-frequency electric signal is obtained based on the difference between the target operating frequency and the actual operating frequency, the welding frequency of the electromagnetic welding apparatus can be adjusted to coincide with the target operating frequency by the variable magnetic flux generated when the high-frequency electric signal is supplied to the electromagnetic induction module 4.
The electromagnetic induction module 4 is specifically configured to obtain a high-frequency electrical signal from the resonant capacitor to generate a variable magnetic flux.
The application provides a control system for controlling electromagnetic welding can carry out automatic adjustment according to the target operating frequency to the welding frequency of electromagnetic welding equipment to make electromagnetic welding equipment weld with target operating frequency, need not user's manual adjustment, improved welding automation control, thereby improve welding process's degree of automation, make welding efficiency lower, thereby make battery production efficiency higher.
In one embodiment, the control system may further include an isolation control module 5. The isolation control module 5 is used for responding to the target pulse signal to determine an output signal, and the output signal can reflect the characteristic information of the target oscillation frequency; the H-bridge drive module 2 is specifically configured to output a target voltage and a target current in response to the output signal described above.
The output signal may reflect a phase difference of the target oscillation frequency and characteristic information of the fixed frequency. The target current may be a direct current.
In this embodiment, the output signal obtained by the isolation control module 5 can well reflect the characteristic information of the target oscillation frequency, and some signals which cannot well reflect the target oscillation frequency are isolated, so that the target current and the target voltage output by the H-bridge driving module 2 can more accurately reflect the target pulse signal. In addition, the embodiment can also enable the output target current to be direct current, and the control process of the direct current is simpler, so that the control method of the whole control system is simpler.
In one embodiment, the control system may further include a frequency tracking module 6, and the frequency tracking module 6 includes a frequency output tracking circuit for controlling the phase shift frequency control module 1 to output the target operating frequency. The phase shift frequency control module 1 is specifically configured to output a target pulse signal based on a target oscillation frequency on the premise of outputting a target operating frequency.
The frequency tracking module 6 is designed based on a target pulse signal to be output by the phase shift frequency control module 1, the output frequency of the phase shift frequency control module 1 is controlled to be a target working frequency in this embodiment, and the frequency adjustment can be performed on the phase shift frequency control module 1, so that a frequency drift error caused by the influence of system temperature drift and the like can be avoided, the control accuracy of the control system is higher, and the welding is more accurate.
In one embodiment, the control system may further include a frequency tracking detection sensor 7, and the frequency tracking detection sensor 7 includes a transformer for detecting the current of the coil in real time, the transformer being configured to feed back the frequency signal and the current signal of the coil in real time and output the frequency signal and the current signal of the coil to the frequency tracking module 6. The frequency tracking module 6 is specifically configured to control the phase shift frequency control module 1 to output the target operating frequency according to the frequency signal and the current signal.
In this embodiment, the frequency tracking detection sensor 7 can feed back the frequency signal and the current signal of the coil in real time, so as to obtain the frequency and the current of the system in time, thereby facilitating the phase shift frequency control module 1 to output the target working frequency.
In one embodiment, the control system may further include a frequency tracking correction module 8, and the frequency tracking correction module 8 includes a frequency correction adjustment circuit for adjusting the phase shift frequency control module 1 to output the target operating frequency. Specifically, the control module 15 corrects and outputs the function of setting the operating frequency in time according to the period and the gradient of the frequency tracking. The embodiment can compensate for frequency drift of the phase shift frequency control module 1 caused by system temperature drift and other influences, so that the actual output working frequency is the same as the target working frequency.
In one embodiment, the control system may further include: frequency adjustment module 9, frequency adjustment module 9 include frequency adjustment circuit for adjust the operating frequency of electromagnetic welding equipment, this embodiment can carry out supplementary adjustment to the operating frequency of electromagnetic welding equipment through frequency adjustment module 9, thereby make frequency adjustment more accurate.
Specifically, as shown in fig. 2, the frequency adjustment circuit may include a voltage controlled oscillator VCO and UCC3895 chip.
The voltage controlled oscillator VCO is used for generating a signal of a target frequency and performing frequency doubling shaping on the signal of the target frequency, and the target frequency is used for determining the working frequency of the electromagnetic welding equipment.
Referring to fig. 9, the UCC3895 chip includes a SYNC synchronization port, and the frequency-doubled and shaped signal is subjected to phase shift and dead zone control through the SYNC synchronization port of the UCC3895 chip and then outputs a PWM driving signal, where the PWM driving signal is used to adjust the operating frequency of the electromagnetic welding device.
The voltage controlled oscillator may be a VCO of HC 4060.
In a specific embodiment, the control system may further include a current adjusting module 10, and the current adjusting module 10 includes a current detection amplifying circuit and a current comparator, and is configured to control the output current of the electromagnetic welding apparatus not to exceed the set current, so that the operating state of the electromagnetic welding apparatus may be safer.
Optionally, as shown in fig. 3, the circuit of the current adjusting module 10 includes a peak current control circuit of UCC 3895;
the peak current control circuit comprises a current transformer and a RAMP port, and is configured to sample a current through the current transformer to obtain a current signal, send the current signal to the RAMP port of the UCC3895 to perform peak current control, so that the current does not exceed a set current, and thus current limiting is performed, where the peak current control process is as follows: and when the current is detected to be out of limit, the PWM wave of the current period is switched off so as to realize cycle-by-cycle current control.
Specifically, as shown in fig. 4, the peak current control circuit is specifically configured to continuously adjust the phase shift angle at 0 to 180 degrees to achieve stable current adjustment, so that the current is always in a resonant state.
In one embodiment, the control system may further include a current tracking detection module 11, where the current tracking detection module 11 includes a current detection amplifying circuit and an analog-to-digital conversion circuit, the current tracking detection module 11 has a software analysis function, and the current tracking detection module 11 is configured to detect an operating current of the welding equipment and send the detected current to the current adjustment module 10. In this way, the current adjustment module 10 is more convenient for current adjustment.
In one embodiment, the control system may further include a voltage tracking detection module 12, the voltage tracking detection module 12 includes a voltage detection amplifying circuit and an analog-to-digital conversion circuit, the voltage tracking detection module 12 has a software analysis function, and the voltage tracking detection module 12 is configured to detect the working voltage of the welding device, so that a worker may check whether the working voltage is normal.
In one embodiment, the control system may further include a cooling system 13, and the cooling system 13 is used to cool the coil, the magnetic core, and the ventilation duct and the heat conducting device of the H-bridge driving module 2, so as to better ensure the stable operation of the system.
In one embodiment, the control system may further include a power supply module 14, and the power supply module 14 includes a single-phase ac input filter, a full-bridge rectification system, a dc output filtering system, an output voltage regulation system, and an output current detection protection system, and the power supply module 14 is configured to supply power to the electromagnetic welding apparatus. The single-phase alternating current input filter, the full-bridge rectification system, the direct current output filtering system, the output voltage adjusting system and the output current detection protecting system are used for carrying out operations such as filtering, rectification, direct current filtering, voltage adjustment and current detection on a public network power supply, and therefore electric signals meeting requirements are output to better supply power for the electromagnetic welding equipment.
In one embodiment, the control system may further include a control module 15, and the control module 15 is configured to determine a target operating frequency, a set operating current, and a period and a gradient of the tracking frequency, and is configured to control the current tracking detection module 11 and the voltage tracking detection module 12 to detect an operating voltage and a current of the electromagnetic welding device, and to control the cooling system 13 to cool the electromagnetic welding device according to an operating temperature of the electromagnetic welding device.
In one embodiment, the control system may further include a communication interface module 16, the communication interface module 16 includes a communication isolation device, a communication status indication device, and a level shift device, and the communication interface module 16 is configured to enable the control module 15 to perform data interaction with other modules.
In a specific embodiment, the control system may further comprise an external IO start module 17, the external IO start module 17 comprising an isolation device for controlling start, end and run times of the electromagnetic welding apparatus.
Corresponding to the control system for controlling electromagnetic welding provided by the first embodiment of the present application, a second embodiment of the present application provides an electronic device, which is applied to a control system for controlling electromagnetic welding, and after the electronic device is powered on and runs a corresponding program through a processor, the electronic device controls the control system for controlling electromagnetic welding in the present application to work.
Referring to FIG. 7: the electronic device 200 is embodied in the form of a general purpose computing device. The components of the electronic device 200 may include, but are not limited to: the at least one processing unit 210, the at least one memory unit 220, and a bus 230 connecting various system components including the memory unit 220 and the processing unit 210.
Wherein the storage unit 220 stores program code, which may be executed by the processing unit 210, to cause the processing unit 210 to perform the steps according to various exemplary embodiments of the present invention described in the section "control method of exemplary control system component" above in this specification. For example, the processing unit 210 may control the phase shift frequency control module 1 to output the target pulse signal based on a target oscillation frequency, which is determined according to a difference between the target operating frequency and the actual operating frequency; controlling the H-bridge driving module 2 to receive a target pulse signal and output a target voltage and a target current in response to the target pulse signal; controlling the resonance component driving module 3 to output a high-frequency electric signal when the electric signals of the target current and the target voltage are electrified; the electromagnetic induction module 4 is controlled to generate a high-frequency eddy current when a high-frequency electric signal is applied, thereby generating a variable magnetic flux to adjust the welding frequency of the electromagnetic welding apparatus to be consistent with the target operating frequency.
The storage unit 220 may include readable media in the form of volatile memory units, such as a random access memory unit RAM2201 and/or a cache memory unit 2202, and may further include a read only memory unit ROM2203.
The storage unit 220 may also include a program/utility 2204 having a set of at least one program module 2205, such program modules 2205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination thereof may comprise an implementation of a network environment.
The electronic device 200 may also communicate with one or more external devices 100, such as a keyboard, pointing device, bluetooth device, etc., as well as with one or more devices that enable a user to interact with the electronic device 200, and/or with any device, such as a router, modem, etc., that enables the electronic device 200 to communicate with one or more other computing devices. Such communication may occur through input/output I/O interface 250, with input/output I/O interface 250 interacting with display unit 240. Also, the electronic device 200 may communicate with one or more networks, such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through the network adapter 260. As shown, the network adapter 260 communicates with the other modules of the electronic device 200 over the bus 230. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 200, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium such as a CD-ROM, a usb disk, a removable hard disk, or on a network, and includes several instructions to enable a computing device such as a personal computer, a server, a terminal device, or a network device to execute the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a program product capable of implementing the above-described method of the present specification. In some possible embodiments, aspects of the invention may also be implemented in the form of a program product comprising program code means for causing a terminal device to carry out the steps according to various exemplary embodiments of the invention described in the above-mentioned "exemplary methods" section of the present description, when the program product is run on the terminal device.
In correspondence with a control system for controlling electromagnetic welding provided in the first embodiment of the present application, a third embodiment of the present application provides a program product 300, which, as shown in fig. 8, describes a program product 300 for implementing the above method according to an embodiment of the present invention, which may employ a portable compact disc read only memory CD-ROM and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples, a non-exhaustive list of readable storage media, include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory unit RAM2201, a read only memory unit ROM2203, an erasable programmable read only memory EPROM or flash memory, an optical fiber, a portable compact disc read only memory CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device through the Internet, for example, using an Internet service provider.
Furthermore, the above-described figures are merely schematic illustrations of processes involved in methods according to exemplary embodiments of the invention, and are not intended to be limiting. In addition, it will be readily understood that the processes shown in the above figures do not indicate or limit the temporal order of the processes.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the terms of the appended claims.
Claims (10)
1. A control system for controlling electromagnetic welding for controlling an electromagnetic welding apparatus, the system comprising:
the phase shift frequency control module (1) is used for outputting a target pulse signal based on a target oscillation frequency, wherein the target oscillation frequency is determined according to the difference between a target working frequency and an actual working frequency, and the target working frequency is a frequency corresponding to a target working current;
an H-bridge driving module (2) for receiving the target pulse signal and outputting a target voltage and a target current in response to the target pulse signal; the H-bridge drive module (2) is specifically configured to output a target voltage and a target current in response to the output signal;
the resonant component driving module (3) comprises an isolation transformer and a resonant capacitor, and the resonant component driving module (3) is used for outputting a high-frequency electric signal when the target current and the target voltage are electrified;
an electromagnetic induction module (4) including a magnetic core and a coil passing around the magnetic core for generating a high-frequency eddy current when the high-frequency electric signal is applied, thereby generating a variable magnetic flux to adjust a welding frequency of the electromagnetic welding apparatus to coincide with the target oscillation frequency and to adjust a current of the electromagnetic welding apparatus to coincide with a target current;
and the isolation control module (5) is used for determining an output signal in response to the phase difference of the target pulse signal, and the output signal can reflect the characteristic information of the target oscillation frequency.
2. A control system for controlling an electromagnetic weld according to claim 1, further comprising:
the frequency tracking module (6) comprises a frequency output tracking circuit and is used for controlling the phase-shift frequency control module (1) to output a target working frequency;
the phase shift frequency control module (1) is used for outputting a target pulse signal based on a target oscillation frequency on the premise of outputting the target working frequency;
the frequency tracking detection sensor (7) comprises a mutual inductor for detecting the current of the coil in real time, and the mutual inductor is used for feeding back the frequency signal and the current signal of the coil in real time and outputting the frequency signal and the current signal of the coil to the frequency tracking module (6);
the frequency tracking module (6) is specifically used for controlling the phase shift frequency control module (1) to output a target working frequency according to the frequency signal and the current signal of the coil.
3. A control system for controlling an electromagnetic weld according to claim 1, further comprising:
the frequency tracking correction module (8) comprises a frequency correction adjusting circuit, and is used for adjusting the target working frequency output by the phase-shift frequency control module (1) according to the set working frequency;
the frequency adjusting module (9) comprises a frequency adjusting circuit and is used for adjusting the working frequency of the electromagnetic welding equipment;
and the current adjusting module (10) comprises a current detection amplifying circuit and a current comparator and is used for controlling the output current of the electromagnetic welding equipment not to exceed the set current.
4. A control system for controlling electromagnetic welding as defined in claim 3, wherein the frequency adjustment circuit comprises:
the voltage controlled oscillator VCO is used for generating a signal of a target frequency and performing frequency doubling shaping on the signal of the target frequency, and the target frequency is used for determining the working frequency of the electromagnetic welding equipment;
the UCC3895 chip comprises a SYNC synchronous port, the signal subjected to frequency doubling shaping is subjected to phase shifting and dead zone control through the SYNC synchronous port of the UCC3895 chip, and then a PWM driving signal is output and used for adjusting the working frequency of electromagnetic welding equipment.
5. The control system for controlling electromagnetic welding of claim 4, wherein said current regulation module (10) circuitry comprises peak current control circuitry of UCC 3895;
the peak current control circuit comprises a current transformer and a RAMP port, and is configured to sample a current through the current transformer to obtain a current signal, send the current signal to the RAMP port of the UCC3895 to perform peak current control, so that the current does not exceed a set current, and thus current limiting is performed, where the peak current control process is as follows: and when the current is detected to be out of limit, the PWM wave of the current period is switched off so as to realize cycle-by-cycle current control.
6. A control system for controlling electromagnetic welding as defined in claim 5, wherein said peak current control circuit is configured to achieve a smooth regulation of the current by continuously adjusting the phase shift angle between 0 and 180 degrees so that the current is always in resonance.
7. The control system for controlling electromagnetic welding of claim 6, further comprising:
the current tracking detection module (11) comprises a current detection amplifying circuit and an analog-to-digital conversion circuit, and the current tracking detection module (11) has a software analysis function and is used for detecting the working current of the welding equipment and sending the current to the current adjustment module (10).
8. A control system for controlling electromagnetic welding according to claim 7, further comprising:
the voltage tracking detection module (12) comprises a voltage detection amplifying circuit and an analog-to-digital conversion circuit, and the voltage tracking detection module (12) has a software analysis function and is used for detecting the working voltage of the welding equipment.
9. The control system for controlling electromagnetic welding of claim 8, further comprising:
a cooling system (13) for cooling the coil, the magnetic core, and the ventilation duct and the heat conducting means of the H-bridge drive module (2);
the power supply module (14) comprises a single-phase alternating current input filter, a full-bridge rectification system, a direct current output filtering system, an output voltage adjusting system and an output current detection protection system, and the power supply module (14) is used for supplying power to the electromagnetic welding equipment;
and the control module (15) comprises a period and a gradient for determining a set working frequency, a set working current and a tracking frequency, and is used for controlling the current tracking detection module (11) and the voltage tracking detection module (12) to detect the working voltage and the current of the electromagnetic welding equipment and controlling the cooling system (13) to cool the electromagnetic welding equipment according to the working temperature of the electromagnetic welding equipment.
10. The control system for controlling electromagnetic welding of claim 9, further comprising:
the communication interface module (16) comprises a communication isolation device, a communication state indication device and a level conversion device, and the communication interface module (16) is used for carrying out data interaction with the control module (15);
an external IO start module (17) comprising isolation devices for controlling start, end and run times of the electromagnetic welding apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210989883.8A CN115437282A (en) | 2022-08-18 | 2022-08-18 | Control system for controlling electromagnetic welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210989883.8A CN115437282A (en) | 2022-08-18 | 2022-08-18 | Control system for controlling electromagnetic welding |
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| Publication Number | Publication Date |
|---|---|
| CN115437282A true CN115437282A (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210989883.8A Pending CN115437282A (en) | 2022-08-18 | 2022-08-18 | Control system for controlling electromagnetic welding |
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| Country | Link |
|---|---|
| CN (1) | CN115437282A (en) |
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2022
- 2022-08-18 CN CN202210989883.8A patent/CN115437282A/en active Pending
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