CN210898942U - Low-power high-frequency chopping soft-switching voltage regulating circuit structure - Google Patents
Low-power high-frequency chopping soft-switching voltage regulating circuit structure Download PDFInfo
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- CN210898942U CN210898942U CN201921578213.7U CN201921578213U CN210898942U CN 210898942 U CN210898942 U CN 210898942U CN 201921578213 U CN201921578213 U CN 201921578213U CN 210898942 U CN210898942 U CN 210898942U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a small-power high-frequency chopping soft switch voltage regulating circuit structure, which comprises a heat radiation module, a voltage regulating module and a control module, wherein the bottom of the voltage regulating module is attached to the upper surface of the heat radiation module, and the voltage regulating module is fixedly connected with the heat radiation module; the control module is fixed on the upper part of the pressure regulating module and is electrically connected with the pressure regulating module. Compared with the prior art, the utility model provides a circuit structure is applied to under the miniwatt environment, and circuit structure is compact, and space utilization is big, and the heat dissipation is fast, and circuit arrangement is convenient, and the electrical property is superior, can gain good chopping voltage regulation effect under being applied to the miniwatt environment.
Description
Technical Field
The utility model belongs to the chopper circuit field, in particular to soft switching regulator circuit's of chopper structure.
Background
The induction heating technology is widely applied to industrial processing scenes such as diathermy, smelting, quenching and the like due to the characteristics of good controllability, high automation degree, high heating efficiency and the like.
In the induction heating apparatus, a power supply apparatus is important. In the existing induction heating equipment, the power supply equipment generally comprises a rectifying module, a voltage regulating module and an inverting module. The external three-phase network voltage is rectified by the rectifying module to become direct current with fixed amplitude and then input into the voltage regulating module, the voltage regulating module performs voltage regulating conversion on the direct current to become direct current with adjustable amplitude and then input into the inverting module, and the direct current finally becomes alternating current with specified amplitude and specified frequency and then is output to be supplied to the induction heater for use.
The voltage regulating module is usually formed by matching and building a switch device and other electronic components, and different voltage regulating effects can be generated due to the on-off change of the switch device. However, in a high frequency environment, the switching device is often turned on at a large voltage and turned off at a large current, that is, the switching device is in a hard on-off state.
The hard on-off state of the switching element not only increases the power loss of the circuit, and the switching element is susceptible to the influence of peak voltage and peak current and has a breakdown danger, but also generates high-amplitude sudden change voltage and sudden change current when the switching element is hard on-off in a high-frequency environment, and the high-amplitude sudden change voltage and the high-amplitude sudden change current cause serious electromagnetic interference to the circuit and seriously affect the stability of power supply equipment.
In order to overcome the above defects, a high-frequency chopping soft-switching voltage regulating circuit is proposed in the prior art, and a circuit schematic diagram of the voltage regulating circuit is shown in fig. 1. The circuit comprises a PWM driving control circuit, a main chopping voltage regulating circuit, an auxiliary chopping voltage regulating circuit and an output circuit.
The main chopping voltage regulation circuit comprises a first diode and a first IGBT (insulated gate bipolar transistor), the cathode of the first diode is connected with the anode of the input high-voltage direct current, the anode of the first diode is connected with the collector of the first IGBT, the grid of the first IGBT is connected with a PWM (pulse-width modulation) drive control circuit, and the emitter of the first IGBT is connected with the cathode of the external input high-voltage direct current.
The main chopping voltage regulating circuit further comprises a first capacitor, one end of the first capacitor is connected to a collector of the first IGBT and a common end of the first diode, and the other end of the first capacitor is connected to an emitter of the first IGBT and a common end of a negative electrode of an external input high voltage.
An auxiliary chopping voltage regulating circuit in the circuit comprises a second IGBT tube, a second diode, a third diode, a second capacitor and a first inductor; the cathode of the third diode is connected with the anode of an externally input high-voltage direct current, the anode of the third diode is connected with the cathode of the second diode, the anode of the second diode is connected with the collector of the second IGBT tube, the emitter of the second IGBT tube is connected with the cathode of the externally input high-voltage direct current, one end of the first inductor is connected with the collector of the second IGBT tube and the common end of the anode of the second diode, the other end of the first inductor is connected with the common end of the anode of the first diode and the collector of the first IGBT tube, one end of the second capacitor is connected with the common end of the common ends of the third diode and the second diode, and the other end of the second capacitor is connected with the common ends of the first inductor, the first diode and the first IGBT tube.
The main chopping voltage regulating circuit and the auxiliary chopping voltage regulating circuit are the basis for realizing soft switching chopping voltage regulation of the switching devices, and the high-frequency chopping soft switching voltage regulating circuit is used under a high-frequency environment, so that voltage regulation can be conveniently realized, the switching loss of the switching devices can be reduced to the maximum extent, and the stability of the circuit is improved.
However, when the circuit is applied to a real low-power application scene, how to combine and arrange each electronic component and how to solve the heat dissipation problem of the circuit, how to solve the problem of current and voltage impact caused by distributed inductance and distributed capacitance of each electronic component in the circuit switching process due to a connection mode, and how to obtain a good application effect, an effective solution is not proposed in the prior art.
Disclosure of Invention
In order to solve the above problem, an object of the present invention is to provide a soft switching regulator circuit structure of low-power high-frequency chopper, which is applied under low-power environment for solving the problem of arrangement of each electronic component, and obtaining the equivalent effects of small circuit structure volume, compact structure and good heat dissipation effect.
The technical scheme of the utility model as follows:
a small-power high-frequency chopping soft-switching voltage regulating circuit structure comprises a heat dissipation module, a voltage regulating module and a control module, wherein the bottom of the voltage regulating module is attached to the upper surface of the heat dissipation module, and the voltage regulating module is fixedly connected with the heat dissipation module; the control module is fixed on the upper part of the pressure regulating module and is electrically connected with the pressure regulating module. Including a plurality of power devices in the pressure regulating module, in the circuit working process, the pressure regulating module will produce a large amount of heats, consequently the utility model provides an among the circuit structure, thermal module is hugged closely to the pressure regulating module, and thermal module provides the installation basis for the pressure regulating module on the one hand, and on the other hand can conveniently take away the heat that the pressure regulating module sent.
Furthermore, the heat dissipation module comprises a heat dissipation plate, a water inlet pipe and a water outlet pipe; a water cooling cavity is formed in the heat dissipation plate, and the water inlet pipe and the water outlet pipe are both communicated with the water cooling cavity; external cooling water flows into the water cooling cavity through a water pipe and flows out through a water outlet pipe. A water cooling cavity is arranged in the heat dissipation module, and external cooling water flows through the water inlet pipe and the water outlet pipe to dissipate heat, so that a better heat dissipation effect is achieved.
Furthermore, the voltage regulating module comprises a main chopping IGBT packaging tube and an auxiliary chopping IGBT packaging tube, and the bottoms of the main chopping IGBT packaging tube and the auxiliary chopping IGBT packaging tube are fixedly attached to the upper surface of the heat dissipation plate; the main chopping IGBT packaging tube and the auxiliary chopping IGBT packaging tube are arranged at intervals.
Furthermore, the main chopping IGBT packaging tube comprises a main chopping first IGBT tube and a main chopping second IGBT tube; a corresponding terminal is led out from the drain electrode of the main chopping first IGBT tube, the grid electrode of the main chopping first IGBT tube is connected with the source electrode of the main chopping first IGBT tube, and the source electrode of the main chopping first IGBT tube is connected with the drain electrode of the main chopping second IGBT tube; the grid electrode and the source electrode of the main chopping second IGBT tube are respectively led out of corresponding wiring terminals; the auxiliary chopping IGBT packaging tube comprises an auxiliary chopping first IGBT tube and an auxiliary chopping second IGBT tube; a corresponding terminal is led out from the drain electrode of the auxiliary chopping first IGBT tube, the grid electrode of the auxiliary chopping first IGBT tube is connected with the source electrode of the auxiliary chopping first IGBT tube, and the source electrode of the auxiliary chopping first IGBT tube is connected with the drain electrode of the auxiliary chopping second IGBT tube; and the grid electrode and the source electrode of the auxiliary chopping second IGBT tube are respectively led out of corresponding wiring terminals. Under the miniwatt environment, the first IGBT pipe of main chopper and the first IGBT pipe of supplementary chopper adopt half-bridge structure construction, and the grid of the first IGBT pipe of supplementary chopper and the first IGBT pipe of main chopper and collector are short circuit respectively promptly for these two IGBT pipes have only its inside integrated diode to insert the circuit, have greatly reduced electron device's volume, convenient integration.
Furthermore, the voltage regulating module further comprises a clamping diode and an auxiliary capacitor, the clamping diode and the auxiliary capacitor are tightly embedded in a semi-closed space formed by the heat dissipation bottom plate, the main chopping IGBT packaging tube and the auxiliary chopping IGBT packaging tube in a surrounding mode, the bottoms of the clamping diode and the auxiliary capacitor are fixedly connected with the heat dissipation plate, and the auxiliary capacitor is fixed on the front side of the clamping diode. The main chopping IGBT packaging tube and the auxiliary chopping IGBT packaging tube are large in size and are arranged at intervals, the two are enclosed together with the heating panel to form a semi-enclosed accommodating space, the clamping diode and the auxiliary inductor are embedded in the accommodating space, on one hand, the clamping diode and the auxiliary inductor are convenient to connect, on the other hand, the space can be utilized to the maximum extent, and the whole circuit structure is compact in arrangement and small in size.
Further, the voltage regulating module is still including auxiliary inductance and connecting the copper line, and auxiliary inductance sets up in the place ahead of heating panel, and main chopper IGBT encapsulation pipe and auxiliary chopper IGBT encapsulation pipe are connected respectively through connecting the copper line in the both ends of auxiliary inductance. The auxiliary inductor is large in size, is arranged in front of the heat dissipation plate in a suspension mode, and is connected with other components only through the connecting copper wire, so that the space utilization rate is improved.
Furthermore, the voltage regulating module also comprises a main chopping capacitor, and the main chopping capacitor is fixed on the upper part of the main chopping IGBT packaging tube. The main chopping capacitor is directly fixed on the upper part of the main chopping IGBT packaging tube, so that the distance between the main chopping capacitor and the main chopping IGBT packaging tube is shortened, and the space on the upper part of the main chopping IGBT packaging tube can be effectively utilized.
Furthermore, the control module comprises a main chopping control panel and an auxiliary chopping control panel; the main chopping control panel is arranged on the rear side of the main chopping IGBT packaging tube, and the bottom of the main chopping control panel is fixedly connected with the upper surface of the main chopping IGBT packaging tube; the auxiliary chopping control panel is arranged on the rear side of the auxiliary chopping IGBT packaging tube, and the bottom of the auxiliary chopping control panel is fixedly connected with the upper surface of the auxiliary chopping IGBT packaging tube.
Above-mentioned each module is arranged the back well, will connect according to its electric connection principle between each electronic components, arrange the structure that forms according to above-mentioned method of arranging, because of its rationally distributed, compact structure, connecting wire between each electronic components also can correspond and shorten, under the high frequency environment, the distributed inductance that produces on the connecting wire also correspondingly reduces, the distributed capacitance who produces because of the problem of arranging between the components and parts corresponds the reduction equally, the problem of the electric current or the voltage impact that the circuit produced switch device because of distributed capacitance and distributed inductance under the high frequency environment has been solved to the at utmost, consequently, from another aspect, adopt the utility model provides a circuit structure also will show the electric property that promotes circuit itself, reduces the interference of the distributed inductance of connecting wire itself.
The utility model has the advantages that: compared with the prior art, the utility model provides a circuit structure is applied to under the miniwatt environment, and circuit structure is compact, and space utilization is big, and the heat dissipation is fast, and circuit arrangement is convenient, can gain better chopping voltage regulation effect.
Drawings
Fig. 1 is a schematic circuit diagram of a high-frequency chopping soft-switching voltage-regulating circuit provided in the prior art, in which a part a is a chopping main loop, a part B is a control loop, and the following is a description of specific components in fig. 1:
IGBT 1: a first IGBT tube; IGBT 2: a second IGBT tube;
d1: a first diode; c3: a first capacitor;
d2: a second diode; d3: a third diode;
c2: a second capacitor; l2: a first inductor.
Fig. 2 is an electrical connection schematic diagram of the low-power high-frequency chopping soft-switching voltage-regulating circuit structure provided by the utility model, wherein R is a front-end rectifier, and F is a front-end filter.
Fig. 3 is a schematic structural diagram of a structure of a low-power high-frequency chopping soft-switching voltage-regulating circuit implemented in the embodiment, which is connected with a front-end filter capacitor, where F is a front-end filter.
Fig. 4 is a schematic diagram of the overall structure of the low-power high-frequency chopping soft-switching voltage-regulating circuit implemented in the embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
referring to fig. 2-4, the utility model provides a small-power high-frequency chopping soft switch voltage regulating circuit structure, which comprises a heat dissipation module, a voltage regulating module and a control module, wherein the bottom of the voltage regulating module is attached to the upper surface of the heat dissipation module, and the voltage regulating module is fixedly connected with the heat dissipation module; the control module is fixed on the upper part of the pressure regulating module and is electrically connected with the pressure regulating module.
In the present embodiment, the heat dissipation module includes a heat dissipation plate 1, a water inlet pipe 2 and a water outlet pipe 3; a water cooling cavity is formed in the heat dissipation plate 1, and the water inlet pipe 2 and the water outlet pipe 3 are communicated with the water cooling cavity.
The voltage regulating module comprises a main chopping IGBT packaging tube 4 and an auxiliary chopping IGBT packaging tube 5, and the bottoms of the main chopping IGBT packaging tube 4 and the auxiliary chopping IGBT packaging tube 5 are fixedly attached to the upper surface of the heat dissipation plate 1; the main chopping IGBT packaging tube 4 and the auxiliary chopping IGBT packaging tube 5 are arranged at intervals. The main chopping IGBT packaging tube 4 comprises a main chopping first IGBT tube Q11 and a main chopping second IGBT tube Q12; a corresponding terminal is led out from the drain electrode of the main chopping first IGBT tube Q11, the grid electrode of the main chopping first IGBT tube Q11 is connected with the source electrode of the main chopping first IGBT tube Q11, and the source electrode of the main chopping first IGBT tube Q3526 is connected with the drain electrode of the main chopping second IGBT tube Q12; the grid electrode and the source electrode of the main chopping second IGBT tube Q12 are respectively led out of corresponding wiring terminals; the auxiliary chopping IGBT packaging tube 4 comprises an auxiliary chopping first IGBT tube Q21 and an auxiliary chopping second IGBT tube Q22; a corresponding terminal is led out from the drain electrode of the auxiliary chopping first IGBT tube Q21, the grid electrode of the auxiliary chopping first IGBT tube Q21 is connected with the source electrode of the auxiliary chopping first IGBT tube Q21, and the source electrode of the auxiliary chopping first IGBT tube Q3526 is connected with the drain electrode of the auxiliary chopping second IGBT tube Q22; the grid electrode and the source electrode of the auxiliary chopping second IGBT tube Q22 are respectively led out of corresponding terminals.
The voltage regulating module further comprises a clamping diode D3 and an auxiliary capacitor C2, the clamping diode D3 and the auxiliary capacitor C2 are tightly embedded in a semi-closed space formed by the heat dissipation bottom plate 1, the main chopping IGBT packaging tube 4 and the auxiliary chopping IGBT packaging tube 5 in a surrounding mode, the bottoms of the clamping diode D3 and the auxiliary capacitor C2 are fixedly connected with the heat dissipation plate 1, and the auxiliary capacitor C2 is fixed on the front side of the clamping diode D3.
The voltage regulating module further comprises an auxiliary inductor L2 and a connecting copper wire 6, the auxiliary inductor L2 is arranged in front of the heat dissipation plate 1, and two ends of the auxiliary inductor L2 are respectively connected with the main chopping IGBT packaging tube 4 and the auxiliary chopping IGBT packaging tube 5 through the connecting copper wire 6.
The voltage regulating module further comprises a main chopping capacitor C3, and the main chopping capacitor C3 is fixed on the upper portion of the main chopping IGBT packaging tube 4.
The control module comprises a main chopping control panel 7 and an auxiliary chopping control panel 8; the main chopping control board 7 is arranged on the rear side of the main chopping IGBT packaging tube 4, and the bottom of the main chopping control board 7 is fixedly connected with the upper surface of the main chopping IGBT packaging tube 4;
the auxiliary chopping control panel 8 is arranged on the rear side of the auxiliary chopping IGBT packaging tube 5, and the bottom of the auxiliary chopping control panel 8 is fixedly connected with the surface of the upper portion of the auxiliary chopping IGBT packaging tube 5.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A small-power high-frequency chopping soft-switching voltage regulating circuit structure is characterized by comprising a heat dissipation module, a voltage regulating module and a control module, wherein the bottom of the voltage regulating module is attached to the upper surface of the heat dissipation module, and the voltage regulating module is fixedly connected with the heat dissipation module; the control module is fixed on the upper part of the pressure regulating module and is electrically connected with the pressure regulating module.
2. The structure of the voltage-regulating circuit of the small-power high-frequency chopping soft switch as claimed in claim 1, wherein the heat-dissipating module comprises a heat-dissipating plate, a water inlet pipe and a water outlet pipe; a water cooling cavity is formed in the heat dissipation plate, and the water inlet pipe and the water outlet pipe are both communicated with the water cooling cavity; external cooling water flows into the water cooling cavity through a water pipe and flows out through a water outlet pipe.
3. The small-power high-frequency chopping soft-switching voltage-regulating circuit structure according to claim 2, wherein the voltage-regulating module comprises a main chopping IGBT packaging tube and an auxiliary chopping IGBT packaging tube, and the bottoms of the main chopping IGBT packaging tube and the auxiliary chopping IGBT packaging tube are fixedly attached to the upper surface of the heat-dissipating plate; the main chopping IGBT packaging tube and the auxiliary chopping IGBT packaging tube are arranged at intervals.
4. The small-power high-frequency chopping soft-switching voltage-regulating circuit structure according to claim 3, wherein the main chopping IGBT packaging tube comprises a main chopping first IGBT tube and a main chopping second IGBT tube; a corresponding terminal is led out from the drain electrode of the main chopping first IGBT tube, the grid electrode of the main chopping first IGBT tube is connected with the source electrode of the main chopping first IGBT tube, and the source electrode of the main chopping first IGBT tube is connected with the drain electrode of the main chopping second IGBT tube; the grid electrode and the source electrode of the main chopping second IGBT tube are respectively led out of corresponding wiring terminals;
the auxiliary chopping IGBT packaging tube comprises an auxiliary chopping first IGBT tube and an auxiliary chopping second IGBT tube; a corresponding terminal is led out from the drain electrode of the auxiliary chopping first IGBT tube, the grid electrode of the auxiliary chopping first IGBT tube is connected with the source electrode of the auxiliary chopping first IGBT tube, and the source electrode of the auxiliary chopping first IGBT tube is connected with the drain electrode of the auxiliary chopping second IGBT tube; and the grid electrode and the source electrode of the auxiliary chopping second IGBT tube are respectively led out of corresponding wiring terminals.
5. The structure of the small-power high-frequency chopping soft-switching voltage-regulating circuit according to claim 4, wherein the voltage-regulating module further comprises a clamping diode and an auxiliary capacitor, the clamping diode and the auxiliary capacitor are tightly embedded in a semi-closed space defined by a radiating bottom plate, a main chopping IGBT packaging tube and an auxiliary chopping IGBT packaging tube, the bottoms of the clamping diode and the auxiliary capacitor are fixedly connected with the radiating plate, and the auxiliary capacitor is fixed on the front side of the clamping diode.
6. The small-power high-frequency chopping soft-switching voltage-regulating circuit structure according to claim 5, wherein the voltage-regulating module further comprises an auxiliary inductor and a connecting copper wire, the auxiliary inductor is arranged in front of the heat-dissipating plate, and two ends of the auxiliary inductor are respectively connected with the main chopping IGBT packaging tube and the auxiliary chopping IGBT packaging tube through the connecting copper wire.
7. The small-power high-frequency chopping soft-switching voltage-regulating circuit structure according to claim 6, wherein the voltage-regulating module further comprises a main chopping capacitor, and the main chopping capacitor is fixed on the upper part of a main chopping IGBT packaging tube.
8. The structure of the voltage-regulating circuit of the small-power high-frequency chopping soft switch as claimed in claim 7, wherein the control module comprises a main chopping control board and an auxiliary chopping control board; the main chopping control panel is arranged on the rear side of the main chopping IGBT packaging tube, and the bottom of the main chopping control panel is fixedly connected with the upper surface of the main chopping IGBT packaging tube; the auxiliary chopping control panel is arranged on the rear side of the auxiliary chopping IGBT packaging tube, and the bottom of the auxiliary chopping control panel is fixedly connected with the upper surface of the auxiliary chopping IGBT packaging tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921578213.7U CN210898942U (en) | 2019-09-20 | 2019-09-20 | Low-power high-frequency chopping soft-switching voltage regulating circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921578213.7U CN210898942U (en) | 2019-09-20 | 2019-09-20 | Low-power high-frequency chopping soft-switching voltage regulating circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210898942U true CN210898942U (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921578213.7U Active CN210898942U (en) | 2019-09-20 | 2019-09-20 | Low-power high-frequency chopping soft-switching voltage regulating circuit structure |
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| Country | Link |
|---|---|
| CN (1) | CN210898942U (en) |
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2019
- 2019-09-20 CN CN201921578213.7U patent/CN210898942U/en active Active
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Effective date of registration: 20211022 Address after: 523000 No. 10, Jinpeng Road, jinfenghuang Industrial Zone, Tangli village, Fenggang town, Dongguan City, Guangdong Province Patentee after: Dongguan double power supply technology Co.,Ltd. Address before: 518000 a1401, No.3 workshop, Tianan Digital Innovation Park, Longcheng Street Central City, Longgang District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Shuangping Power Technology Co.,Ltd. |
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