CN209497393U - A kind of capacitive load charge and discharge feed circuit and power supply device with the circuit - Google Patents
A kind of capacitive load charge and discharge feed circuit and power supply device with the circuit Download PDFInfo
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- CN209497393U CN209497393U CN201920576437.8U CN201920576437U CN209497393U CN 209497393 U CN209497393 U CN 209497393U CN 201920576437 U CN201920576437 U CN 201920576437U CN 209497393 U CN209497393 U CN 209497393U
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Abstract
The utility model discloses a kind of capacitive load charge and discharge feed circuit and power supply devices with the circuit, the capacitive load charge and discharge feed circuit includes feedback transformer unit, feedback transformer unit includes feedback transformer, one end of primary one end and load capacitance of feedback transformer connects, and the primary other end of feedback transformer is connect with the output end of load capacitance charge-discharge control circuit；The secondary of feedback transformer is connect with energy storage device.The utility model can be realized load capacitance and be charged and discharged the energy transfer of process to secondary and store, and reuse for input, can greatly improve the whole working efficiency that pulse or square-wave voltage driving device are obtained on capacitor.
Description
Technical field
The utility model relates to circuits to be related to technical field, and in particular to a kind of capacitive load charge and discharge feed circuit and tool
Have the power supply device of the circuit, in particular to a kind of capacitive load charge and discharge feed circuit and numerical control amplitude with the circuit and
The rectangle wave generation device of frequency.
Background technique
It is well known that inductance and capacitor in circuit is energy-storage travelling wave tube, energy is not consumed.It is obtained on inductance and resistance
The pulse of various amplitudes and frequency, square-wave voltage be easier to realize, and various amplitudes and frequency are obtained on capacitor
The pulse that is rapidly rising or falling, square-wave voltage are then relatively difficult, and the efficiency of general driving circuit is very low, especially
High-voltage pulse or square-wave voltage are generated on bulky capacitor.In order to improve the drive efficiency to capacitive load,
A kind of be segmented using different voltages is disclosed in CN03801037.2 to improve efficiency the method efficiency of capacitor implementation charge and discharge, but
It is that the voltage that this method obtains on capacitive load rises or falls along meeting discontinuously, and entire circuit structure also seems that comparison is multiple
It is miscellaneous, it is also very limited, especially to high pressure is generated on capacitor driving in the raising of drive efficiency.In addition, there is researcher
It is proposed is improved using high-power drive circuit obtains the pulse being rapidly rising or falling or square waveform in capacitive load, but
Its efficiency is very low.
Utility model content
The utility model aims to solve at least the technical problems existing in the prior art, especially innovatively proposes a kind of appearance
Property load charge-discharge feed circuit and power supply device with the circuit.
In order to realize the above-mentioned purpose of the utility model, first aspect according to the present utility model, the utility model is mentioned
A kind of capacitive load charge and discharge feed circuit is supplied comprising feedback transformer unit, the feedback transformer unit include anti-
Present transformer, one end of primary one end and load capacitance of the feedback transformer connects, feedback transformer it is primary another
One end is connect with the output end of load capacitance charge-discharge control circuit；The secondary of feedback transformer is connect with energy storage device.
The capacitive load charge and discharge feed circuit of the utility model can be realized the energy that load capacitance is charged and discharged process
Amount is transferred to secondary and stores, and reuses for input, can greatly improve and obtain pulse or square-wave voltage drive on capacitor
The whole working efficiency of dynamic device.
In a kind of preferred embodiment of the utility model, the load capacitance charge-discharge control circuit includes concatenated
The power end of first switch tube Q1 and second switch Q2, first switch tube are connect with external power supply and/or the energy storage device,
The ground terminal of second switch is grounded, and the common end of first switch tube and second switch is connect with feedback transformer primary；The
The enable end of one switching tube and second switch is connect with the control terminal of switch controlled circuit respectively, switch controlled circuit control
System realizes that first switch tube and second switch are not turned on, first switch tube is connected and second switch cut-off, first switch
Three kinds of states are connected in pipe cut-off and second switch.
When Q1 and Q2 are not turned on, the voltage on capacitor continues to have, and does not consume energy；When Q1 conducting and Q2 cut-off
When, by transformer TF to capacitor charging, since transformer TF primary has voltage, so its secondary output also has voltage, into
And charge to capacitor CF, so that secondary will be transferred to the portion of energy of capacitor charging and store by realizing, reused for input；
Similarly, when Q1 cut-off and Q2 conducting, capacitor passes through the primary electric discharge of feedback transformer, and the energy to discharge equally passes through transformation
Device TF is transferred to its secondary and stores.
It further include feedback rectification filtering unit in another preferred embodiment of the utility model, the feedback is whole
Stream filter unit includes rectifier bridge, and two input terminals of rectifier bridge are connected from the different endpoints of feedback transformer secondary, rectifier bridge
Output end connect energy storage device, one end of energy storage device is connect by inductance with external power supply anode, energy storage device it is another
End ground connection.Secondary will be transferred to the portion of energy of capacitor charging and stored, reuse for input to realize.
In order to realize the above-mentioned purpose of the utility model, the second aspect according to the present utility model, the utility model is mentioned
A kind of power supply device with capacitive load charge and discharge feed circuit is supplied, which is characterized in that including external power supply, load capacitance
Charge-discharge control circuit and capacitive load charge and discharge feed circuit, the power end and external electrical of load capacitance charge-discharge control circuit
Source connection；The capacitive load charge and discharge feed circuit includes feedback transformer, primary one end and load of feedback transformer
One end of capacitor connects, and the primary other end of feedback transformer is connect with the output end of load capacitance charge-discharge control circuit；
The secondary of feedback transformer is connect with energy storage device.
The power supply device of the utility model can be obtained on capacitor quick (rate of change greater than 500V/us) rising or
The impulse waveform or rectangular wave of failing edge, and there is high efficiency (efficiency is up to 90% or more).
Detailed description of the invention
Fig. 1 is the structural schematic diagram of capacitive load charge and discharge feed circuit in a kind of preferred embodiment of the utility model；
Fig. 2 is the structural schematic diagram of power supply device in a kind of preferred embodiment of the utility model.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " longitudinal direction ", " transverse direction ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached
Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of utility model.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the company being also possible to inside two elements
It is logical, it can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art, it can
To understand the concrete meaning of above-mentioned term as the case may be.
The utility model discloses a kind of capacitive load charge and discharge feed circuits, as shown in Figure 1 comprising feedback transformer
Unit, the feedback transformer unit include feedback transformer TF, primary one end of the feedback transformer TF and load electricity
Hold one end connection of CL, the output end of the primary other end and load capacitance charge-discharge control circuit of feedback transformer TF connects
It connects；The secondary of feedback transformer TF is connect with energy storage device.
It in the present embodiment, can also include feedback rectification filtering unit, the feedback rectification filtering unit includes whole
Bridge is flowed, two input terminals of rectifier bridge are connected from the different endpoints of TF grade of feedback transformer, and the output end of rectifier bridge connects storage
One end of energy device, energy storage device is connect by inductance with external power supply anode, the other end ground connection of energy storage device.
Energy storage device is selected as capacitor CF, in Fig. 1, for capacitor CF1 and CF2 in parallel.
In the present embodiment, load capacitance charge-discharge control circuit includes concatenated first switch tube Q1 and second switch
The power end of pipe Q2, first switch tube Q1 are connect with external power supply and/or the energy storage device, the ground terminal of second switch Q2
The common end of ground connection, first switch tube Q1 and second switch Q2 are connect with feedback transformer TF primary；First switch tube Q1 and
The enable end of second switch Q2 is connect with the control terminal of switch controlled circuit respectively, and switch controlled circuit control realizes the
One switching tube Q1 and second switch Q2 is not turned on, first switch tube Q1 is connected and second switch Q2 cut-off, first switch
Three kinds of states are connected in pipe Q1 cut-off and second switch Q2.When Q1 and Q2 are not turned on, the voltage on load capacitance CL is saved
It is constant, do not consume energy；When Q1 conducting and Q2 cut-off, charged by transformer TF to load capacitance CL, due to transformer TF
Primary has voltage, so its secondary output also has voltage, and then charges to capacitor CF1, CF2, so that realizing will be to load electricity
The portion of energy for holding CL charging is transferred to secondary and stores, and reuses for input；Similarly, it when Q1 cut-off and Q2 conducting, bears
Load capacitor CL is discharged by the primary of feedback transformer, and the energy of electric discharge equally passes through transformer TF and is transferred to its secondary and deposits
Storage；Meanwhile the raising and lowering speed of voltage on load capacitance CL can also be effectively improved by introducing feedback transformer, under this
Drop and the rate of climb depend primarily on the turn ratio of feedback transformer primary and secondary coil.It, can be very by feedback transformer
Realize well the energy transfer to capacitor charging and discharge process to input terminal, and then greatly improve on capacitor obtain pulse or
The whole working efficiency of square-wave voltage driving device.Certainly, the efficiency of efficiency and transformer in practice, switching tube Q1,
The conducting resistance of Q2 has much relations.
In the present embodiment, switching tube is high-power FET or switching transistor.
In the present embodiment, specific switch controlled mode can also adopt public in the prior art, such as CN106253689B
The technology opened.Switch controlled circuit can also be using the structure in CN201510767040.3, and therefore not to repeat here.
Based on the above design, the utility model additionally provides a kind of power supply device, as shown in Figure 2 comprising external power supply,
The capacitive load charge and discharge feed circuit of controller, load capacitance charge-discharge control circuit and the utility model, the load electricity
The control output end of the control terminal and controller of holding charge-discharge control circuit connects, the power supply of load capacitance charge-discharge control circuit
End is connect with external power supply.
The power supply device further includes that pulse control voltage transformation module connected to the controller, transformer driving respectively are single
Member, transformer unit, rectification filtering unit, filtering voltage sampling unit.
Controller is mainly realized various controls, the display of the amplitude of real-time measurement output voltage and the various information of realization, is passed
It is defeated etc..The pulse signal output end of controller is connected with the signal input part of pulse control voltage transformation module, pulse control electricity
The pulse signal of controller is converted to front and back and is input to transformer driving unit, arteries and veins along precipitous pulse signal by pressure converter unit
Punching control voltage transformation module is mainly made of Schmitt trigger and other elements, is realized and is believed the 3.3V pulse of microprocessor
Front and back number is converted to along very steep pulse signal.The primary of transformer driving unit driving transformer, transformer unit realize electricity
The transformation of pressure.Pulse voltage is rectified, is converted to DC voltage after filtering by rectification filtering unit.Filtering voltage sampling unit is main
The DC voltage high low signal after rectifying and wave-filtering is input to band in microprocessor after following, filter by electric resistance partial pressure, amplifier
A/D converter, to realize to the real-time detection of output voltage amplitude.
It in the present embodiment, further include output switch controlled circuit unit, the output switch controlled circuit list
The input terminal of member is connected with controller comprising DC-DC voltage transformation module, digital signal isolating chip or module and resistance,
The control signal that controller exports is transformed to the effective of switching tube in controllable load capacitor charging/discharging controling circuit by capacitor etc.
Signal.
It can also include isolation communication unit, the isolation communication unit includes wired communication interface in present embodiment
And wireless module, realize the communication of controller and external equipment.It can also include protection processing unit, the protection processing unit
Including overcurrent, over-voltage, output short circuit protection circuit.It can also be shown including information and input unit, user are shown by information
Information exchange is carried out with input unit and controller.
The work process for the device that this patent proposes is main are as follows: is inputted by 32 level controller STM32F103RD according to user
Information (including pulse width and amplitude, frequency etc.) execute below of both control: on the one hand, microprocessor is according to input
Pulse amplitude, control transformer driving unit output impulse modulation PWM control driving tube driving transformer primary, in transformation
The pulse of device secondary output certain voltage amplitude and width exports required DC voltage after rectifying and wave-filtering.Simultaneously through filtering
After the sampling of wave voltage sampling unit, output controls 12 A/D conversion of interior band using voltage input to 32-bit microprocessor, real
It now to the real-time measurement of output voltage, and is compared with desired value, automatic corrected impulse width, makes the DC voltage etc. of output
In the amplitude voltage of setting；On the other hand, microprocessor controls in output switching element according to the pulse width and frequency of setting
Pulse width and frequency needed for the switch situation of switch realizes output.In addition, the Patent equipment can also be single by communication isolation
The realizations such as member and mobile phone, computer communicate, and reach the control to output voltage amplitude, frequency or pulse width etc..
In the present embodiment, external power supply, controller, load capacitance charge-discharge control circuit, pulse control voltage become
Change unit, transformer driving unit, transformer unit, rectification filtering unit, filtering voltage sampling unit, isolation communication unit,
The prior art can be all made of with the model of input unit and connection by protecting processing unit, information to show, for example, by using this reality
With the technology in the patent of novel people's previous application, therefore not to repeat here.
Specific microprocessor control unit, pulse control voltage transformation module, transformer driving unit, transformer unit,
Model and structure in CN204156749U can be used in rectification filtering unit and filtering voltage sampling unit, it is only necessary to will filter
The output end of the test point dislocation rectification filtering unit of wave voltage sampling unit.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (9)
1. a kind of capacitive load charge and discharge feed circuit, which is characterized in that including feedback transformer unit, the feedback transformer
Unit includes feedback transformer (TF), and one end of primary one end and load capacitance (CL) of the feedback transformer (TF) connects
It connects, the primary other end of feedback transformer (TF) is connect with the output end of load capacitance charge-discharge control circuit；Feed back transformation
The secondary of device (TF) is connect with energy storage device.
2. capacitive load charge and discharge feed circuit as described in claim 1, which is characterized in that the load capacitance charge and discharge is automatically controlled
Circuit processed includes concatenated first switch tube (Q1) and second switch (Q2), the power end and external electrical of first switch tube (Q1)
Source and/or energy storage device connection, the ground terminal ground connection of second switch (Q2), first switch tube (Q1) and second switch
(Q2) common end is connect with feedback transformer (TF) primary；
The enable end of first switch tube (Q1) and second switch (Q2) is connect with the control terminal of switch controlled circuit respectively, is opened
It closes control circuit control processed and realizes that first switch tube (Q1) and second switch (Q2) are not turned on, first switch tube (Q1) is connected
Three kinds of states are connected with second switch (Q2) cut-off, first switch tube (Q1) cut-off and second switch (Q2).
3. capacitive load charge and discharge feed circuit as claimed in claim 1 or 2, which is characterized in that further include feedback rectification filter
Wave unit, the feedback rectification filtering unit include rectifier bridge, and two input terminals and feedback transformer (TF) of rectifier bridge are secondary
The connection of different endpoints, the output end of rectifier bridge connects energy storage device, one end of energy storage device by inductance and external power supply just
Pole connection, the other end ground connection of energy storage device.
4. a kind of power supply device with capacitive load charge and discharge feed circuit described in claim 1, which is characterized in that including outer
Portion's power supply, load capacitance charge-discharge control circuit and capacitive load charge and discharge feed circuit described in claim 1, load capacitance
The power end of charge-discharge control circuit is connect with external power supply；
The capacitive load charge and discharge feed circuit includes feedback transformer (TF), primary one end of feedback transformer (TF) with
One end of load capacitance (CL) connects, the primary other end and load capacitance charge-discharge control circuit of feedback transformer (TF)
Output end connection；The secondary of feedback transformer (TF) is connect with energy storage device.
5. power supply device as claimed in claim 4, which is characterized in that further include controller, pulse control voltage transformation module,
Transformer driving unit, transformer unit, rectification filtering unit, filtering voltage sampling unit；
The pulse signal output end of controller is connected with the signal input part of pulse control voltage transformation module, pulse control voltage
The pulse signal of controller is converted to front and back and is input to transformer driving unit along precipitous pulse signal by converter unit；
The primary of transformer driving unit driving transformer, transformer unit realize the transformation of voltage；
Pulse voltage is rectified, is converted to DC voltage after filtering by rectification filtering unit；
DC voltage high low signal after filtering voltage sampling unit acquisition rectifying and wave-filtering is input to the A/D conversion of band in controller
Device realizes the real-time detection to output voltage amplitude.
6. power supply device as described in claim 4 or 5, which is characterized in that further include output switch controlled circuit unit, institute
The input terminal for stating output switch controlled circuit unit is connected with controller comprising DC-DC voltage transformation module, by controller
The control signal of output is transformed to the useful signal of switching tube in controllable load capacitor charging/discharging controling circuit.
7. power supply device as described in claim 4 or 5, which is characterized in that it further include isolation communication unit, the isolation communication
Unit includes wired communication interface and wireless module, realizes the communication of controller and external equipment.
8. power supply device as described in claim 4 or 5, which is characterized in that it further include protection processing unit, the protection processing
Unit includes overcurrent, over-voltage, output short circuit protection circuit.
9. power supply device as described in claim 4 or 5, which is characterized in that it further include that information is shown and input unit, Yong Hutong
Information is crossed to show and input unit and controller progress information exchange.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920576437.8U CN209497393U (en) | 2019-04-25 | 2019-04-25 | A kind of capacitive load charge and discharge feed circuit and power supply device with the circuit |
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|---|---|---|---|
| CN201920576437.8U CN209497393U (en) | 2019-04-25 | 2019-04-25 | A kind of capacitive load charge and discharge feed circuit and power supply device with the circuit |
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| CN209497393U true CN209497393U (en) | 2019-10-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936295A (en) * | 2019-04-25 | 2019-06-25 | 阮海生 | A kind of capacitive load charge and discharge feed circuit and power supply device with the circuit |
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- 2019-04-25 CN CN201920576437.8U patent/CN209497393U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936295A (en) * | 2019-04-25 | 2019-06-25 | 阮海生 | A kind of capacitive load charge and discharge feed circuit and power supply device with the circuit |
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