CN210007618U - DC conversion circuit with anti-surge function and DC conversion system - Google Patents
DC conversion circuit with anti-surge function and DC conversion system Download PDFInfo
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- CN210007618U CN210007618U CN201921099059.5U CN201921099059U CN210007618U CN 210007618 U CN210007618 U CN 210007618U CN 201921099059 U CN201921099059 U CN 201921099059U CN 210007618 U CN210007618 U CN 210007618U
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Abstract
A DC conversion circuit with an anti-surge function and a DC conversion system with the anti-surge function are provided, the DC conversion circuit comprises a power supply access module, a power supply processing module, a power supply conversion module, a filtering processing module and an anti-surge protection module, the power supply access module receives th DC power supply signals, the power supply processing module performs voltage stabilization processing and filtering processing on th DC power supply signals, the power supply conversion module receives switch control signals, the switch control signals are switched on or off and adjust the voltage amplitude of the th DC power supply signals after voltage stabilization processing and filtering processing to obtain second DC power supply signals, the filtering processing module performs filtering processing on the second DC power supply signals and outputs driving loads to work, when the power supply conversion module is switched on or switched off, the anti-surge protection module performs anti-surge protection on the power supply conversion module, and the embodiment of the application can prevent physical damage caused by peak electric energy generated at the moment of power supply switching on and switching off.
Description
Technical Field
The application belongs to the technical field of electronic circuits, and particularly relates to direct current conversion circuits with an anti-surge function and a direct current conversion system with the anti-surge function.
Background
With the rapid development of electronic design technology, the variety and functions of electronic products are increasing, so that every different types of electronic products need to be connected with electric energy with different amplitudes to keep a safe functional state, so that technicians need to convert the electric energy into electric energy with different types to match the power supply requirements of different types of electronic products, in the process of converting a power supply, a type of power supply can be converted into the power supply with multiple different amplitudes to reuse the functions of types of power supplies, the power supply design cost of the electronic products is saved, and the application range of power supply of the power supply is greatly expanded by the power supply conversion technology, so that the electronic products can be suitable for various different power systems to keep safe and stable operation of the electronic products.
However, the power conversion circuit in the conventional technology needs to convert electric energy for multiple times, which results in a complex circuit structure, complicated power conversion steps and low efficiency, and the conventional power conversion circuit has high circuit design difficulty and manufacturing degree; in the process of converting the electric energy, the transmitted electric energy needs to be frequently cut off or conducted, so that the electronic components can generate larger peak electric energy, the peak electric energy can damage the physical safety of the electronic components, and even the electronic components in the circuit can be completely burnt out at high voltage; the traditional technology does not adopt effective suppression measures for peak electric energy in the power conversion circuit, so that the traditional power conversion circuit is low in safety and easy to have physical faults.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present application provides dc conversion circuits with an anti-surge function and a dc conversion system with an anti-surge function, and aims to solve the problem that in the conventional technical scheme, a power conversion circuit is complicated in power conversion steps and is easily subjected to physical damage of peak power, so that the safety of a circuit structure is low.
An th aspect of the embodiment of the present application provides kinds of dc conversion circuits having a surge prevention function, including:
the power supply access module receives th direct-current power supply signals;
the power supply processing module is connected with the power supply access module and is used for performing voltage stabilization processing and filtering processing on the th direct-current power supply signal;
the power supply conversion module is connected with the power supply processing module, receives a switch control signal, conducts or shuts off according to the switch control signal, and adjusts the voltage amplitude of the th direct-current power supply signal after voltage stabilization processing and filtering processing to obtain a second direct-current power supply signal;
the filtering processing module is connected with the power supply conversion module and is used for filtering the second direct-current power supply signal and outputting a driving load to work; and
and the anti-surge protection module is connected with the power conversion module, and is used for performing anti-surge protection on the power conversion module in the moment of switching on or switching off the power conversion module.
In of these embodiments, the surge protection module comprises:
the switch unit is connected with the power supply conversion module and generates a protection driving signal according to the second direct-current power supply signal;
the current limiting unit is connected with the power supply conversion module and the switch unit, and carries out current limiting protection on the power supply conversion module according to the protection driving signal; and
and the voltage stabilizing unit is connected with the power supply conversion module and the switch unit, and carries out voltage stabilizing protection on the power supply conversion module according to the protection driving signal.
In of these embodiments, the switch unit includes:
th capacitor, the second capacitor and th switch tube;
the terminal of the th capacitor and the control terminal of the th switching tube are connected with the power output terminal of the power conversion module;
the second end of the th capacitor, the th end of the second capacitor and the th conducting end of the th switching tube are commonly connected to the power input end of the power conversion module, the current limiting unit and the voltage stabilizing unit;
and a second conducting end of the switch tube and a second end of the second capacitor are connected to the ground in common.
Among embodiments, the current limiting unit includes a th magnetic bead and a thermistor;
the th end of the thermistor is connected with the power input ends of the switch unit and the power conversion module, the second end of the thermistor is connected with the th end of the magnetic bead, and the second end of the magnetic bead is grounded.
In of these embodiments, the voltage stabilization unit includes:
th resistor, second resistor and voltage regulator diode;
a terminal of the th resistor and a terminal of the second resistor are commonly connected to the power output terminal of the power conversion module, and a cathode of the zener diode, a second terminal of the th resistor and a second terminal of the second resistor are commonly connected to the switch unit;
and the anode of the voltage stabilizing diode is connected with the power input end of the power conversion module.
In of these embodiments, the power access module includes a signal input port and a switch;
the signal input port receives the DC power supply signal;
the of the th switch is connected with the positive electrode signal output end of the th signal input port, the negative electrode signal output end of the th signal input port is connected with the power supply processing module, and the second end of the th switch is connected with the power supply processing module.
In embodiments, the power processing module comprises:
th diode, variable resistor, th inductance, second inductance, third capacitance, fourth capacitance, fifth capacitance, sixth capacitance and seventh capacitance;
a cathode of the diode, a th end of the variable resistor, a th end of the third capacitor, a th end of the fourth capacitor, a th end of the th inductor and a th end of the second inductor are connected in common to form a positive signal input end of the power supply processing module, and the positive signal input end of the power supply processing module is connected with the power supply access module;
an anode of the th diode, a second end of the variable resistor, a second end of the third capacitor, a th end of the fifth capacitor and a th end of the seventh capacitor are connected in common to form a negative end of the power processing module, and the negative end of the power processing module is connected with the power access module and the power conversion module;
the second end of the fourth capacitor is connected with the second end of the fifth capacitor;
an th end of the sixth capacitor, a second end of the th inductor and a second end of the second inductor are connected in common to form a positive signal output end of the power supply processing module, and the positive signal output end of the power supply processing module is connected with the power supply conversion module;
and the second end of the sixth capacitor is connected with the second end of the seventh capacitor.
In embodiments, the power conversion module comprises:
the second signal input port, the eighth capacitor, the ninth capacitor, the tenth capacitor, the second switching tube, the third resistor, the fourth resistor, the fifth resistor, the sixth resistor, the seventh resistor and the eighth resistor;
the second signal input port receives the switch control signal;
the th end of the eighth capacitor is connected with the surge protection module and the power supply processing module;
a second end of the eighth capacitor, a th end of the ninth capacitor, a th end of the third resistor, a th end of the fourth resistor, a th end of the fifth resistor, and a th conducting end of the second switch tube are commonly connected to the power supply processing module;
a second end of the fourth resistor, a second end of the fifth resistor and a second conducting end of the second switching tube are connected to the filtering processing module and the anti-surge protection module in common;
a second end of the ninth capacitor, a second end of the third resistor and a th end of the sixth resistor are connected to a control end of the second switch tube in common;
the second terminal of the sixth resistor is connected to the th conducting terminal of the third switch, the th terminal of the seventh resistor, the th terminal of the eighth resistor and the th terminal of the tenth capacitor are connected to the control terminal of the third switch, the second terminal of the eighth resistor, the second terminal of the tenth capacitor, the second conducting terminal of the third switch and the cathode signal output terminal of the second signal input port are connected to ground, and the second terminal of the seventh resistor is connected to the anode signal output terminal of the second signal input port.
In of these embodiments, the filter processing module includes a plurality of filter capacitors connected in parallel;
th ends of the filter capacitors are all connected with the power supply conversion module, and second ends of the filter capacitors are all grounded.
A second aspect of the embodiments of the present application provides dc conversion systems with an anti-surge function, including:
a power supply that generates an th DC power signal, an
According to the direct current conversion circuit with the anti-surge function, the direct current conversion circuit is connected with the power supply.
The direct current conversion circuit with the anti-surge function can be directly connected with direct current electric energy through the power supply connection module to achieve the conversion process of the direct current electric energy, voltage stabilization, filtering and amplitude adjustment processing are carried out on the th direct current power supply signal, the stable second direct current power supply signal can be output through the filtering processing module, the conversion process of the direct current electric energy is simplified, the converted direct current electric energy can drive a load to keep a rated working state, the direct current conversion circuit can carry out high-precision conversion on the direct current electric energy, the application range is more , the anti-surge protection module is additionally arranged in the circuit to achieve anti-surge protection in the electric energy conversion process, the safety and the stability of electronic components of the power supply conversion module are guaranteed, and the electronic components are prevented from being damaged by peak current at the moment of power supply, and the direct current conversion circuit in the embodiment has a higher electric energy conversion safety level and an application range.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dc conversion circuit with an anti-surge function according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an anti-surge protection module according to an embodiment of of the present application;
fig. 3 is a schematic circuit diagram of a switch unit according to an embodiment of the present application ;
fig. 4 is a schematic circuit diagram of a current limiting unit according to an embodiment of the present application ;
fig. 5 is a schematic circuit diagram of a voltage regulator unit according to an embodiment of the present application ;
fig. 6 is a schematic circuit structure diagram of a power access module according to an embodiment of the present application ;
fig. 7 is a schematic circuit diagram of a power processing module according to an embodiment of the present application ;
fig. 8 is a schematic circuit diagram of a power conversion module according to an embodiment of the present application ;
fig. 9 is a schematic circuit diagram of a filtering processing module according to an embodiment of the present application ;
fig. 10 is a schematic structural diagram of a dc conversion system with an anti-surge function according to an embodiment of of the present application.
Detailed Description
For purposes of making the present application more readily apparent, the technical solutions and advantages thereof, reference is now made to the following detailed description taken in conjunction with the accompanying drawings and examples, it being understood that the specific examples described herein are for purposes of illustration only and are not intended to limit the application.
It should be noted that the surge phenomenon refers to a peak current/peak voltage generated when an electronic component is turned on or off at an instant, and the peak power far exceeds a rated operation power of the electronic component, for example, the peak voltage will exceed a stable voltage of the electronic component in a normal operating state by tens of times or even hundreds of times, so the surge phenomenon has become which is an important factor for harming the operating safety of the electronic component.
Referring to fig. 1, in the structural schematic diagram of the dc conversion circuit 10 with the anti-surge function provided in the embodiment of the present application, the dc conversion circuit 10 not only can realize an accurate and stable conversion function for the dc power, but also has a simple power conversion process, and can perform anti-surge protection for the dc power conversion process, thereby ensuring the working safety and stability of the electronic component; for convenience of explanation, only the parts related to the present embodiment are shown, and detailed as follows:
the dc conversion circuit 10 includes: the power supply protection device comprises a power supply access module 101, a power supply processing module 102, a power supply conversion module 103, a filtering processing module 104 and an anti-surge protection module 105.
The power access module 101 receives th dc power signal.
When the dc conversion circuit 10 is connected to the th dc power signal, the dc conversion circuit 10 may implement an amplitude adjustment function for the th dc power signal, so the dc conversion circuit 10 in this embodiment may be applied to different power systems through the power access module 101, and has high compatibility.
The power supply processing module 102 is connected to the power supply access module 101, and the power supply processing module 102 performs voltage stabilization processing and filtering processing on the th direct-current power supply signal.
When the power access module 101 outputs the th dc power signal to the power processing module 102, the power processing module 102 sequentially stabilizes and filters the dc power, and after stabilizing the th dc power signal, the power amplitude is prevented from being too high, and the fluctuation amount in the dc power is eliminated, so that the stabilized th dc power signal maintains higher stability and accuracy, and after filtering the dc power, the power processing module 102 can eliminate the interference components, such as the ac flow, in the th dc power signal, and improve the accuracy and efficiency of power conversion, so that the dc conversion circuit 10 can perform a more efficient conversion function on the dc power, and the dc conversion process in this embodiment has higher anti-interference performance and application range.
The power conversion module 103 is connected to the power processing module 102, and the power conversion module 102 receives the switch control signal, performs on or off according to the switch control signal, and adjusts the voltage amplitude of the th dc power signal after the voltage stabilization processing and the filtering processing to obtain a second dc power signal.
For example, the voltage amplitude of the th dc power signal is adjusted in this embodiment by a step-down process and a step-up process, so the power conversion module 103 has high flexibility and controllability for the conversion process of the dc power.
Optionally, the power processing module 102 is connected to a power input end of the power conversion module 103, the power processing module 102 outputs an th dc power signal to the power conversion module 103, the switch control signal includes circuit on-off control information, and optionally, the switch control signal is generated by a switch control circuit, for example, the switch control circuit generates a switch control signal according to an operation signal of a user to change a dc conversion process, so that the power conversion process of the power conversion module 103 has good control flexibility, wherein a specific circuit structure of the switch control circuit adopts a circuit structure in an exemplary technique, under the driving of the switch control signal, the power conversion module 103 is turned on or off to change a transmission state of a th dc power signal, and then a second dc power signal generated by the power conversion module 103 also has different voltage amplitudes to achieve the effect of boosting and reducing voltage, therefore, in this embodiment, by changing the on or off state of the power conversion module 103, a function of adjusting the dc power can be implemented, which is simple and convenient to operate, and the dc conversion process has higher control response speed and accuracy.
The filtering processing module 104 is connected to the power conversion module 103, and the filtering processing module 104 performs filtering processing on the second dc power signal and outputs the second dc power signal to drive the load 20 to work.
Illustratively, the filtering processing module 104 is connected to a power output end of the power conversion module 103, and the filtering processing module 104 is further connected to the load 20, so that the filtering processing module 104 outputs the second dc power signal after filtering processing to the load 20 to drive the load 20 to be in a rated operation state, thereby ensuring the electrical energy safety and the working efficiency of the load 20; after the dc conversion circuit 10 performs dc conversion on the dc power, rated dc power can be always provided to the load 20, and the dc conversion process has higher compatibility and practical value.
After the power conversion module 103 converts the amplitude of the dc power, the power output end of the power conversion module 103 rapidly transmits the second dc power signal to the filtering processing module 104, and since the power conversion module 103 may be interfered by electromagnetic noise during the conversion of the dc power, after the filtering processing module 104 filters the second dc power signal, the interference component in the second dc power signal can be completely eliminated, so that the second dc power signal contains more stable dc power, the filtered second dc power signal has safer circuit driving performance, and the conversion accuracy and conversion rate of the dc power are improved; therefore, the dc conversion circuit 10 in this embodiment is compatible to be applied to different communication environments, and outputs the stable second dc power signal to the load 20 in real time, thereby reducing the conversion error and the signal output error of the dc power.
The anti-surge protection module 105 is connected to the power conversion module 103, and when the power conversion module 103 is turned on or turned off, the anti-surge protection module 105 performs anti-surge protection on the power conversion module 103.
The anti-surge protection module 105 is connected to the power input end of the power conversion module 103 and the power output end of the power conversion module 103, and the anti-surge protection module 105 can monitor the electric energy operation information inside the power conversion module 103 in real time.
Because the power conversion module 103 can implement the on-off function according to the switch control signal, and when the power conversion module 103 is turned on or off, the power conversion module 103 will generate spike current/spike voltage with sudden change in a moment, in this embodiment, the surge protection module 105 can effectively suppress the spike current/spike voltage inside the power conversion module 103, so as to protect the physical security and the operation stability of internal electronic components of the power conversion module 103, and prevent the power conversion module 103 from being damaged by overvoltage/overcurrent at the moment of turning on or off, so the surge protection module 105 can always perform surge protection on the power conversion module 103, the internal electric energy of the power conversion module 105 is maintained within the safety threshold range, the power conversion module 105 has higher control security, and can implement a more stable and flexible conversion function on the th dc power signal, and this embodiment has better dc conversion compatibility and anti-interference performance.
In the circuit structure of the dc conversion circuit 10 shown in fig. 1, the dc conversion circuit 10 has a simplified structure and is highly flexible, when the power access module 101 accesses the th dc power signal, the real-time conversion function of the th dc power signal can be realized by using the on/off performance of the power conversion module 103, the operation is simple, the dc power has high conversion precision and rotation speed rate, the second dc power signal can be accurately obtained after the voltage amplitude of the dc power is adjusted by the power conversion module 103, the rated power can be provided to the load 20 by the second dc power signal, so as to ensure that the load 20 is in the rated working state, and further, the dc conversion circuit 10 in the embodiment has a more flexible adjustment function and compatibility with respect to the dc power, and the anti-surge protection module 105 is additionally arranged in the dc conversion process, the spike generated at the moment when the power conversion module 103 is turned on or turned off by the power conversion module 105 can be effectively inhibited to prevent the power conversion module 103 from receiving the damage of the dc power, the power conversion module 103 can perform the safety and the spike generated at the moment, and the spike generated by the conventional dc conversion circuit can be effectively inhibited by the overvoltage conversion circuit, the dc power conversion circuit, the internal safety conversion circuit can be more easily and the direct current conversion circuit can be converted, and the disadvantage that the internal safety of the direct current conversion circuit can be improved and the direct current conversion circuit can be more effectively solved, and the direct current conversion circuit can be more easily.
Fig. 2 shows a structural schematic of the anti-surge protection module 105 provided in this embodiment as optional embodiments, and referring to fig. 2, the anti-surge protection module 105 includes a switching unit 1051, a current limiting unit 1052, and a voltage stabilizing unit 1053.
The switch unit 1051 is connected to the power conversion module 103, and the switch unit 1051 generates the protection driving signal according to the second dc power signal.
The switching unit 1051, a power input end of the power conversion module 103, and a power output end of the power conversion module 103, where the switching unit 1051 is connected to a second dc power signal, and can determine a dc power adjustment state of the power conversion module 103 according to the second dc power signal, for example, the power conversion module 103 can determine a turn-on or turn-off state of the power conversion module 103 according to the second dc power signal, and whether the power conversion module 103 performs on-off state switching; therefore, the switching unit 1051 generates the protection driving signal according to the electric energy conversion state of the power conversion module 103, and performs the anti-surge protection on the power conversion module 103 according to the protection driving signal, so that the anti-surge protection efficiency and accuracy of the power conversion module 103 are improved, and unnecessary electric energy loss is reduced; therefore, in this embodiment, the switch unit 1051 is used to monitor the power conversion process of the power conversion module 103 in real time, and perform accurate anti-surge protection on the electronic components according to the actual power output condition of the power conversion module 103, and the anti-surge protection module 105 can implement a self-adaptive current-limiting protection/current-limiting protection function for the dc conversion process, and has high flexibility; not only is the physical damage of the power conversion module 103 caused by the peak current/peak voltage avoided, but also the electric energy utilization rate and the working efficiency in the anti-surge protection process are improved.
The current limiting unit 1052 is connected to the power conversion module 103 and the switch unit 1051, and the current limiting unit 1052 performs current limiting protection on the power conversion module 103 according to the protection driving signal.
The current limiting unit 1052 is connected to the power input terminal of the power conversion module 103, so that the current limiting unit 1052 can suppress the peak current generated by the power conversion module 103 in real time at the moment when the power conversion module 103 is turned on or turned off, thereby avoiding the peak current from causing large physical damage to the power conversion module 103; the switch unit 1051 outputs the protection driving signal to the current limiting unit 1052, and the working state of the current limiting unit 1052 can be changed by the protection driving signal, so that the current limiting protection function of the power conversion module 103 has higher operation simplicity; therefore, the current-limiting protection state of the current-limiting unit 1052 can be changed in real time through the switch unit 1051, the current-limiting unit 1052 has higher control flexibility for the power conversion module 103, and the current-limiting unit 1052 can quickly perform current-limiting protection on electronic components, so that the internal current of the power conversion module 103 is within a safe current threshold range, the control response precision is higher, and the power conversion module 103 is prevented from being in an overcurrent operation state for a long time.
The voltage stabilizing unit 1053 is connected to the power conversion module 103 and the switch unit 1051, and the voltage stabilizing unit 1053 performs voltage stabilizing protection on the power conversion module 103 according to the protection driving signal.
The voltage stabilizing unit 1053 is connected with the power input end of the power conversion module 103 and the power output end of the power conversion module 103, and the voltage stabilizing unit 1053 can suppress the peak voltage in the power conversion module 103 when the power conversion module 103 is turned on or turned off, so that physical damage of the peak voltage to electronic components in the power conversion module 103 is prevented, and the physical safety of each electronic component in the power conversion module 103 is maintained; when the switch unit 1051 outputs the protection driving signal to the voltage stabilizing unit 1053, the working state of the voltage stabilizing unit 1053 can be changed in real time by the protection driving signal, so that the voltage stabilizing unit 1053 can quickly adjust the voltage inside the power conversion module 103, the voltage stabilizing protection efficiency and accuracy of the voltage stabilizing unit 1053 to the power conversion module 103 are improved, further, the internal voltage of the power conversion module 103 can be always maintained in a safe voltage threshold range, the voltage adjustment sensitivity and stability to the power conversion module 103 are improved, and the electric energy loss caused by the voltage stabilizing unit 1053 when voltage stabilizing protection is performed on the power conversion module 103 is reduced.
Therefore, the anti-surge protection module 105 in this embodiment can prevent overvoltage and overvoltage in the dc conversion process according to the voltage regulation state of the power conversion module 103, so as to realize high-precision anti-surge protection of electronic components, and the protection efficiency is extremely high.
As an alternative , fig. 3 shows a schematic circuit structure of the switch unit 1051 provided in this embodiment, please refer to fig. 3, in which the switch unit 1051 includes a th capacitor C1, a second capacitor C2, and a th switch tube M1;
the th end of the th capacitor C1 and the control end of the th switching tube M1 are connected with the power output end of the power conversion module 103, and then the power conversion module 103 can output a second direct-current power signal to the control end of the th switching tube M1, and the turn-on or turn-off of the th switching tube M1 can be adjusted in real time through the second direct-current power signal.
The second end of the th capacitor C1, the th end of the second capacitor C2 and the th conducting end of the th switch tube M1 are commonly connected to the power input end of the power conversion module 103, the current limiting unit 1052 and the voltage stabilizing unit 1053, and then the switch unit 1051 detects the power conversion state of the power conversion module 103 to obtain a protection driving signal, and the working states of the current limiting unit 1052 and the voltage stabilizing unit 1053 can be adjusted in real time through the protection driving signal, so that the current limiting unit 1052 and the voltage stabilizing unit 1053 can realize an accurate anti-surge protection function for the power conversion module 103.
The second conducting terminal of the switch tube M1 and the second terminal of the second capacitor C2 are commonly connected to the ground GND.
Optionally, the th switch M1 is an MOS transistor or a triode, for example, the th switch M1 is an NMOS transistor, wherein a gate of the NMOS transistor is a control terminal of the th switch M1, a source of the NMOS transistor is a th turn-on terminal of the th switch M1, and a drain of the NMOS transistor is a second turn-on terminal of the th switch M1, so that the switch unit 1051 in this embodiment has a relatively compatible circuit structure.
The th capacitor C1 is connected between the control end of the th switch tube M1 and the th conducting end of the 0 th switch tube M1, when the th switch tube M is turned on or turned off according to the level state of the protection driving signal, the th capacitor C1 can adjust the level state of the control end of the th switch tube M1, and has a -determined delay effect on the switching of the th switch tube M1 between the on state and the off state, so that the stability and the anti-interference of the turning on and off of the th switch tube M1 are increased, the surge protection module 105 has safer surge protection performance for the power conversion module 103, and the phenomenon of mistaken turning on of the th switch tube M1 is avoided.
The second capacitor C2 can keep the voltage between the conducting terminal of the th switch tube M1 and the second conducting terminal of the th switch tube M1 changing smoothly, so that the switch unit 1051 can output a protection driving signal more safely, the control response safety of the switch unit 1051 in the on state and the off state is improved, and the phenomenon that the voltage between the conducting terminal of the th switch tube M1 and the second conducting terminal of the th switch tube M1 changes suddenly is prevented.
In the circuit structure of the switching unit 1051 shown in fig. 3, when the power conversion module 103 performs different power conversion processes on the dc power, the second dc power signal output by the power conversion module 103 has different voltage amplitudes, when the voltage amplitude of the second dc power signal changes, the th switching tube M1 is turned on or off correspondingly, the th switching tube M1 has higher control response precision, for example, when the protection driving signal is in the th level state, the th switching tube M1 is turned on, and when the protection driving signal is in the second level state, the th switching tube M1 is turned off, so that according to the on or off condition of the th switching tube M1, a corresponding protection driving signal can be output, by the protection driving signal, an efficient anti-surge protection function for the power conversion module 103 can be realized, and the switching unit 1051 can perform anti-surge protection on the electronic components according to the actual state of the dc conversion, thereby preventing power loss and the problem of anti-surge protection delay in the dc conversion process from occurring.
As an alternative , fig. 4 shows a schematic circuit structure of the current limiting unit 1052 provided in this embodiment, and referring to fig. 4, the current limiting unit 1052 includes a th magnetic bead LS1 and a thermistor RT 1.
The end of the thermistor RT1 is connected to the switch unit 1051 and the power input end of the power conversion module 103, the second end of the thermistor RT1 is connected to the end of the magnetic bead LS1, and the second end of the magnetic bead LS1 is connected to the GND.
The thermistor RT1 can sense the operation current variation of the power conversion module 103 itself, when the current amplitude passing through the thermistor RT1 changes, the power parameter of the thermistor RT1 itself changes, for example, when the current of the thermistor RT1 increases, the self resistance of the thermistor RT1 decreases, so the operation current variation of the power conversion module 103 can be monitored in real time through the resistance of the thermistor RT1, the monitoring precision is very high, wherein the magnetic beads have the functions of absorbing electrostatic pulses and suppressing the spike current variation, so the magnetic bead LS1 can access the operation current information of the power conversion module 103 through the thermistor RT1, and suppress the spike current generated at the moment when the power conversion module 103 is turned on or off, so as to prevent the electronic components inside the power conversion module 103 from being in an over-current operation state for a long time, and therefore the current limiting protection state of the current limiting unit 1052 can be controlled by the switch unit 1051, so that the current limiting unit 1052 can sensitively protect the power conversion module 103 in real time, and the power conversion module 103 has higher stability of direct current limiting and direct current conversion.
As an alternative , fig. 5 shows a schematic circuit structure of the voltage regulator unit 1053 provided in this embodiment, please refer to fig. 5, in which the voltage regulator unit 1053 includes a th resistor R1, a second resistor R2, and a zener diode ZD 1.
The th end of the th resistor R1 and the th end of the second resistor R2 are commonly connected to the power output end of the power conversion module 103, and the cathode of the zener diode ZD1, the second end of the th resistor R1 and the second end of the second resistor R2 are commonly connected to the switch unit 1051.
The anode of the zener diode ZD1 is connected to the power input terminal of the power conversion module 103.
The switch unit 1051 can directly change the actual working state of each electronic component in the voltage stabilizing unit 1053, and the working state of each electronic component in the voltage stabilizing unit 1053 has higher control precision; the voltage stabilizing unit 1053 in this embodiment is connected between the power input terminal of the power conversion module 103 and the power output terminal of the power conversion module 103, and the voltage stabilizing diode ZD1 can implement a voltage stabilizing protection function to suppress the peak voltage in the power conversion module 103, so that the power conversion module 103 can always be in a safe and stable dc power conversion function, thereby preventing the electronic components in the power conversion module 103 from being damaged by overvoltage operation.
In the circuit structure of the voltage stabilizing unit 1053, the th resistor R1 and the second resistor R2 can realize the function of current-limiting protection for the zener diode ZD1, and when the zener diode ZD1 performs voltage stabilizing protection on the voltage of the power conversion module 103, the th resistor R1 and the second resistor R2 which are connected in parallel limit the current flowing into the zener diode ZD1, so that the zener diode ZD1 can be maintained in a safer operation state, therefore, the voltage stabilizing unit 1053 has a simpler circuit structure, and realizes the function of precise voltage stabilizing protection on the power conversion module 103.
Fig. 6 shows a structural schematic of the power access module 101 provided in this embodiment as optional embodiments, and referring to fig. 6, the power access module 101 includes a signal input port JP1 and a switch JS1, a signal input port JP1 receives a dc power signal, and power transmission compatibility and stability of the dc power signal can be ensured in real time through the signal input port JP 1.
The th end of the th switch JS1 is connected with the positive signal output end of the th signal input port JP1, the negative signal output end of the th signal input port JP1 is connected with the power processing module 102, and the second end of the th switch JS is connected with the power processing module 102.
Illustratively, the signal input port JP1 is implemented by using a signal transmission chip in an exemplary technology, the power access module 101 has high communication compatibility and signal transmission stability, the dc conversion circuit 10 is compatibly applicable to various different industrial technical fields, when the signal input port JP1 is accessed to the dc power signal, the transmission state of the dc power signal can be changed by turning on or off the switch JS1, and only when the switch JS1 is turned on, the dc conversion circuit 10 can perform voltage amplitude adjustment on the dc power signal, so the power access module 101 in this embodiment has a relatively simplified circuit structure, can implement fast transmission of dc power, accelerates the conversion rate of dc power, and has a higher practical value.
As an alternative implementation, fig. 7 shows a schematic circuit structure of the power processing module 102 provided in this embodiment, referring to fig. 7, the power processing module 102 includes a diode D1 of , a variable resistor RD, an inductor L1 of , a second inductor L2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, and a seventh capacitor C7.
The cathode of the th diode D1, the th end of the variable resistor RD, the th end of the third capacitor C3, the th end of the fourth capacitor C4, the th end of the th inductor L1, and the th end of the second inductor L2 are commonly connected to form a positive signal input end of the power processing module 102, and the positive signal input end of the power processing module 102 is connected to the power accessing module 101.
An anode of the th diode D1, a second terminal of the variable resistor RD, a second terminal of the third capacitor C3, a th terminal of the fifth capacitor C5, and a th terminal of the seventh capacitor C7 are commonly connected to form a negative terminal of the power processing module 102, and the negative terminal of the power processing module 102 is connected to the power accessing module 101 and the power converting module 103.
When the power access module 101 outputs the th dc power signal to the positive signal input end of the power processing module 102, the diode D1 with the th function can stabilize the voltage of the th dc power signal, so that the th dc power signal has a more stable voltage amplitude during transmission inside the dc conversion circuit 10, thereby ensuring the voltage regulation accuracy of the dc conversion circuit 10 and the application range of dc conversion, and preventing the electronic components in the power processing module 102 from being damaged by high voltage.
The second terminal of the fourth capacitor C4 is connected to the second terminal of the fifth capacitor C5.
The terminal of the sixth capacitor C6, the second terminal of the inductor L1, and the second terminal of the second inductor L2 are connected together to form a positive signal output terminal of the power processing module 102, and the positive signal output terminal of the power processing module 102 is connected to the power conversion module 103.
The second terminal of the sixth capacitor C6 is connected to the second terminal of the seventh capacitor C7.
When DC power signal is transmitted in the power processing module 102, the filter function for DC power signal can be realized by combining the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6 and the seventh capacitor C7, so as to eliminate the interference component of DC power signal in time, thereby greatly ensuring the precision of DC power in the transmission process, and the positive signal output end of the power processing module 102 can output DC power signal after voltage stabilization and filtering to the power conversion module 103, thereby ensuring the internal signal compatibility and stability of the DC conversion circuit 10.
The th inductor L1 and the second inductor L2 are differential mode inductors, differential mode noise can be suppressed through the th inductor L1 and the second inductor L2, anti-interference performance of th direct current power supply signals in the transmission process is improved, the th inductor L1 and the second inductor L2 can transmit currents with different amplitudes, transmission reliability and accuracy of the power supply processing module 102 to the th direct current power supply signals are guaranteed, and the power supply processing module 102 can be applied to different industrial technical fields and keeps stable and compatible transmission performance to the th direct current power supply signals.
Fig. 7 shows a schematic circuit structure of the power processing module 102, where the power processing module 102 has a relatively compatible circuit structure, and can implement a real-time processing function for the th dc power signal, and the power conversion module 103 can access dc power with higher precision, which is beneficial to improving the conversion precision and controllability of the dc power conversion circuit 10 for dc power.
As an alternative , fig. 8 shows a schematic circuit structure of the power conversion module 103 provided in this embodiment, referring to fig. 8, the power conversion module 103 includes a second signal input port JP2, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, a second switch tube M2, a third switch tube M3, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8.
The second signal input port JP2 receives a switch control signal.
The switch control signal includes switch control information, and can change the on or off state of the power conversion module 103; and the on-off state of the power supply conversion module 103 has higher control response precision and speed.
The th end of the eighth capacitor C8 terminates the anti-surge protection module 105 and the power processing module 102.
The end of the eighth capacitor C8 can be connected with the th dc power signal after voltage stabilization and filtering, and then the power conversion module 103 can realize compatible transmission and processing of electric energy, and in the process of dc power conversion performed by the power conversion module 103, the surge protection module 105 can suppress peak current and peak voltage generated in the process of dc power conversion, and has higher safety protection performance for electronic components in the power conversion module 103.
The second end of the eighth capacitor C8, the end of the ninth capacitor C9, the end of the third resistor R3, the end of the fourth resistor R4, the end of the fifth resistor R5, and the conducting end of the second switch tube M2 are commonly connected to the power processing module 102, and the power processing module 102 may output the dc power signal after voltage stabilization and after filtering to the power conversion module 103 to improve the dc conversion rate of the power conversion module 103.
The second end of the fourth resistor R4, the second end of the fifth resistor R5, and the second conducting end of the second switch tube M2 are connected to the filtering processing module 104 and the anti-surge protection module 105, and when the electronic component in the power conversion module 103 performs voltage regulation processing on the th dc power signal, the second dc power signal can be rapidly output to the filtering processing module 104, and the dc conversion circuit 10 has high power conversion efficiency and accuracy.
The second terminal of the ninth capacitor C9, the second terminal of the third resistor R3 and the terminal of the sixth resistor R6 are commonly connected to the control terminal of the second switch transistor M2.
The second end of the sixth resistor R6 is connected to the conducting end of the third switch M3, the end of the seventh resistor R7, the end of the eighth resistor R8 and the end of the tenth capacitor C10 are connected to the control end of the third switch M3, the second end of the eighth resistor R8, the second end of the tenth capacitor C10, the second conducting end of the third switch M3 and the negative signal output end of the second signal input port JP2 are connected to the ground GND, and the second end of the seventh resistor R7 is connected to the positive signal output end of the second signal input port JP 2.
Illustratively, the second signal input port JP2 is implemented by using a signal transmission chip in the exemplary technology, and the integrity of information in the switch control signal and the timeliness of transmission can be guaranteed through the second signal input port JP 2.
Optionally, the second switching tube M2 is an MOS tube or a triode, and the third switching tube M3 is an MOS tube or a triode.
When the second signal input port JP2 is connected with a switch control signal, the third switching tube M3 can be controlled to be switched on or switched off in real time through the switch control signal, when the third switching tube M3 is switched on or switched off, the level state of the control end of the second switching tube M2 can be changed in a self-adaptive mode, the second switching tube M2 can be switched on or switched off, when the second switching tube M2 and the third switching tube M3 are in different on or off states respectively, the voltage boosting or voltage reducing effect of the voltage amplitude of the direct-current power supply signal can be achieved, the voltage regulating precision is extremely high, the control steps are simple and convenient, the second switching tube M2 and the third switching tube M3 are switched on or switched off, the electric energy conversion function can be achieved, the direct-current conversion efficiency is greatly improved, the electric energy loss in the direct-current electric energy conversion process is reduced, and the application range pole is extremely wide.
Fig. 8 shows a circuit structure of the power conversion module 103, when the second switching transistor M2 and the third switching transistor M3 are turned on or off, a large peak current/voltage will occur inside the power conversion module 103, which causes instability in the dc conversion process; the anti-surge protection module 105 can acquire the fluctuation information of the electric energy amplitude in the power conversion module 103 in real time, and can accurately suppress the sudden change of the electric energy amplitude in the power conversion module 103, the second switch tube M2 and the third switch tube M3 can realize safe on or off function under the control of the switch control signal, so that the physical safety of each electronic component in the power conversion module 103 is ensured, the power conversion module 103 can stably output the second direct current power supply signal to the filtering processing module 104, the inside of the direct current conversion circuit 10 has higher physical safety and application range, the second direct current power supply signals with different amplitudes can be output through the power conversion module 103, and the safety level is higher.
As optional embodiments, fig. 9 shows a schematic circuit structure of the filtering processing module 104 provided in this embodiment, please refer to fig. 9, where the filtering processing module 104 includes a plurality of filtering capacitors CS connected in parallel.
The th ends of the filtering capacitors CS are all connected to the power conversion module 103, and the second ends of the filtering capacitors CS are all grounded GND.
The th ends of the filter capacitors CS are further connected to the load 20, and when the filter capacitors CS perform filtering processing on the second dc power signal, the filter capacitors CS output the filtered second dc power signal to the load 20, thereby ensuring the power supply safety of the load 20.
In this embodiment, the filter capacitors CS have a function of isolating direct current from direct current and alternating current, and then the second dc power signal can be filtered through the plurality of filter capacitors CS, so that the filtered second dc power signal output by the filter processing module 104 has more stable dc power, and the dc conversion circuit 10 can realize a higher-precision conversion function for the dc power; rated direct current electric energy can be output to the load 20 through the filtering processing module 104, so that the load 20 can be connected with safer and more stable direct current electric energy, and the working efficiency and the control response speed of the load 20 are improved; therefore, the filtering processing module 104 in this embodiment has a compatible circuit structure, and after filtering processing is performed on the second dc power signal, the practical value and the application range of the dc conversion circuit 10 can be improved, and the dc conversion process implemented by the dc conversion circuit 10 has higher anti-interference performance and dc conversion accuracy, and can be compatibly applied to different communication environments.
Fig. 10 shows a dc conversion system 100 with an anti-surge function provided in this embodiment, please refer to fig. 10, where the dc conversion system 100 includes a power supply 1001 and the dc conversion circuit 10 with an anti-surge function as described above, where the power supply 1001 generates the th dc power signal, the dc conversion circuit 10 is connected to the power supply 1001, and the dc conversion circuit 10 converts the th dc power signal to obtain a second dc power signal, where the th dc power signal and the second dc power signal have different voltage amplitudes, so that the dc conversion system 100 can output dc power with different voltage amplitudes to corresponding loads to drive the loads, so as to implement safer and more stable circuit functions, and the safety level is higher.
Referring to the embodiments of fig. 1 to 9, when the power supply 1011 outputs th dc power signals and th dc power signals include corresponding dc power, the dc conversion circuit 10 can convert th dc power signals according to rated power requirements of each type of loads to output corresponding dc power to the loads, thereby ensuring power supply safety and operation flexibility of the loads, the dc conversion system 100 can be universally applied to various different industrial technologies, and the dc conversion circuit 10 can prevent spike current/spike voltage from occurring in the dc conversion process, the dc conversion system 100 has higher safety and stability inside, the dc conversion system 100 has higher dc power conversion efficiency and flexibility, the internal electronic components of the dc conversion system 100 have better physical safety level, the controllability of the dc conversion is stronger, the dc conversion system 100 has higher dc conversion efficiency and has anti-surge function, thereby having an effect on the development of the dc power conversion technology in the field, effectively overcoming the active problem of damaging the dc conversion technology and simplifying the electronic components of the dc conversion process.
In this document, relational terms such as and second, and the like, are used solely to distinguish from entities without necessarily requiring or implying any actual such relationship or order between such entities, and the terms "comprising," "including," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product or structure comprising -series elements may inherently contain the elements described by the phrases "including … …" or "including … …," without further limitation, without excluding the presence of additional elements from processes, methods, articles, or end devices that include the elements described.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1, A DC conversion circuit with anti-surge function, characterized by that, includes:
the power supply access module receives th direct-current power supply signals;
the power supply processing module is connected with the power supply access module and is used for performing voltage stabilization processing and filtering processing on the th direct-current power supply signal;
the power supply conversion module is connected with the power supply processing module, receives a switch control signal, conducts or shuts off according to the switch control signal, and adjusts the voltage amplitude of the th direct-current power supply signal after voltage stabilization processing and filtering processing to obtain a second direct-current power supply signal;
the filtering processing module is connected with the power supply conversion module and is used for filtering the second direct-current power supply signal and outputting a driving load to work; and
and the anti-surge protection module is connected with the power conversion module, and is used for performing anti-surge protection on the power conversion module in the moment of switching on or switching off the power conversion module.
2. The dc conversion circuit with an anti-surge function according to claim 1, wherein the anti-surge protection module comprises:
the switch unit is connected with the power supply conversion module and generates a protection driving signal according to the second direct-current power supply signal;
the current limiting unit is connected with the power supply conversion module and the switch unit, and carries out current limiting protection on the power supply conversion module according to the protection driving signal; and
and the voltage stabilizing unit is connected with the power supply conversion module and the switch unit, and carries out voltage stabilizing protection on the power supply conversion module according to the protection driving signal.
3. The direct current conversion circuit having an anti-surge function according to claim 2, wherein the switching unit includes:
th capacitor, the second capacitor and th switch tube;
the terminal of the th capacitor and the control terminal of the th switching tube are connected with the power output terminal of the power conversion module;
the second end of the th capacitor, the th end of the second capacitor and the th conducting end of the th switching tube are commonly connected to the power input end of the power conversion module, the current limiting unit and the voltage stabilizing unit;
and a second conducting end of the switch tube and a second end of the second capacitor are connected to the ground in common.
4. The DC conversion circuit with the anti-surge function according to claim 2, wherein the current limiting unit comprises th magnetic beads and a thermistor;
the th end of the thermistor is connected with the power input ends of the switch unit and the power conversion module, the second end of the thermistor is connected with the th end of the magnetic bead, and the second end of the magnetic bead is grounded.
5. The dc conversion circuit with an anti-surge function according to claim 2, wherein the voltage stabilization unit includes:
th resistor, second resistor and voltage regulator diode;
a terminal of the th resistor and a terminal of the second resistor are commonly connected to the power output terminal of the power conversion module, and a cathode of the zener diode, a second terminal of the th resistor and a second terminal of the second resistor are commonly connected to the switch unit;
and the anode of the voltage stabilizing diode is connected with the power input end of the power conversion module.
6. The DC conversion circuit with anti-surge function according to claim 1, wherein said power access module comprises signal input port and switch;
the signal input port receives the DC power supply signal;
the of the th switch is connected with the positive electrode signal output end of the th signal input port, the negative electrode signal output end of the th signal input port is connected with the power supply processing module, and the second end of the th switch is connected with the power supply processing module.
7. The dc conversion circuit with surge protection function according to claim 1, wherein the power processing module comprises:
th diode, variable resistor, th inductance, second inductance, third capacitance, fourth capacitance, fifth capacitance, sixth capacitance and seventh capacitance;
a cathode of the diode, a th end of the variable resistor, a th end of the third capacitor, a th end of the fourth capacitor, a th end of the th inductor and a th end of the second inductor are connected in common to form a positive signal input end of the power supply processing module, and the positive signal input end of the power supply processing module is connected with the power supply access module;
an anode of the th diode, a second end of the variable resistor, a second end of the third capacitor, a th end of the fifth capacitor and a th end of the seventh capacitor are connected in common to form a negative end of the power processing module, and the negative end of the power processing module is connected with the power access module and the power conversion module;
the second end of the fourth capacitor is connected with the second end of the fifth capacitor;
an th end of the sixth capacitor, a second end of the th inductor and a second end of the second inductor are connected in common to form a positive signal output end of the power supply processing module, and the positive signal output end of the power supply processing module is connected with the power supply conversion module;
and the second end of the sixth capacitor is connected with the second end of the seventh capacitor.
8. The dc conversion circuit with an anti-surge function according to claim 1, wherein the power conversion module includes:
the second signal input port, the eighth capacitor, the ninth capacitor, the tenth capacitor, the second switching tube, the third resistor, the fourth resistor, the fifth resistor, the sixth resistor, the seventh resistor and the eighth resistor;
the second signal input port receives the switch control signal;
the th end of the eighth capacitor is connected with the surge protection module and the power supply processing module;
a second end of the eighth capacitor, a th end of the ninth capacitor, a th end of the third resistor, a th end of the fourth resistor, a th end of the fifth resistor, and a th conducting end of the second switch tube are commonly connected to the power supply processing module;
a second end of the fourth resistor, a second end of the fifth resistor and a second conducting end of the second switching tube are connected to the filtering processing module and the anti-surge protection module in common;
a second end of the ninth capacitor, a second end of the third resistor and a th end of the sixth resistor are connected to a control end of the second switch tube in common;
the second terminal of the sixth resistor is connected to the th conducting terminal of the third switch, the th terminal of the seventh resistor, the th terminal of the eighth resistor and the th terminal of the tenth capacitor are connected to the control terminal of the third switch, the second terminal of the eighth resistor, the second terminal of the tenth capacitor, the second conducting terminal of the third switch and the cathode signal output terminal of the second signal input port are connected to ground, and the second terminal of the seventh resistor is connected to the anode signal output terminal of the second signal input port.
9. The direct current conversion circuit with the surge protection function according to claim 1, wherein the filter processing module comprises a plurality of filter capacitors connected in parallel;
th ends of the filter capacitors are all connected with the power supply conversion module, and second ends of the filter capacitors are all grounded.
10, A DC conversion system with anti-surge function, comprising:
a power supply that generates an th DC power signal, an
The dc conversion circuit with anti-surge function of any one of above claims 1-9, wherein the dc conversion circuit is connected to the power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921099059.5U CN210007618U (en) | 2019-07-12 | 2019-07-12 | DC conversion circuit with anti-surge function and DC conversion system |
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| CN201921099059.5U CN210007618U (en) | 2019-07-12 | 2019-07-12 | DC conversion circuit with anti-surge function and DC conversion system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310950A (en) * | 2020-10-21 | 2021-02-02 | 中国科学院长春光学精密机械与物理研究所 | Surge suppression circuit and aerospace equipment |
| CN114374811A (en) * | 2022-01-04 | 2022-04-19 | 珠海市金品创业共享平台科技有限公司 | Television and three-in-one core board thereof |
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2019
- 2019-07-12 CN CN201921099059.5U patent/CN210007618U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310950A (en) * | 2020-10-21 | 2021-02-02 | 中国科学院长春光学精密机械与物理研究所 | Surge suppression circuit and aerospace equipment |
| CN114374811A (en) * | 2022-01-04 | 2022-04-19 | 珠海市金品创业共享平台科技有限公司 | Television and three-in-one core board thereof |
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