CN104600969A - High-power switching power supply output filtering device - Google Patents
High-power switching power supply output filtering device Download PDFInfo
- Publication number
- CN104600969A CN104600969A CN201510004686.6A CN201510004686A CN104600969A CN 104600969 A CN104600969 A CN 104600969A CN 201510004686 A CN201510004686 A CN 201510004686A CN 104600969 A CN104600969 A CN 104600969A
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- Prior art keywords
- copper bar
- load
- copper
- winding
- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention relates to a high-power switching power supply output filtering device. The device comprises a ferrite E-shaped core, a ferrite E cores of the first and second windings, between the first and second windings in parallel There were no more sense of film capacitors, the E-shaped ferrite core to the DC output side copper cathode and anode copper DC output DC output cathode copper and copper cathode load connected to the DC output negative copper , shunts and loads connected to the anode copper; the positive DC output load cathode copper and copper forming the first winding, the DC output negative copper, shunts and load the negative copper constituting the second winding; load positive mounted in parallel between copper and copper anode load multiple sets no sense of film capacitors. Power switching power supply output filter device of the structure can be widely used in electrolysis, electroplating, crystal production industry to use high-power switching power supply.
Description
Technical field
The present invention relates to one and be exclusively used in high power switching power supply output filtering device.
Background technology
Current high power switching power supply is more and more extensive in electrolysis, plating, crystal growth sector application, and general output is direct current 6 ~ 80V, more than 1000A.In order to improve processing quality, the ripple requirement of output voltage and electric current is more low better, and a lot of producer is in series with filter at high power switching power supply output at present.The inductance of filter is generally made up of through magnetic core copper bar, copper bar now through magnetic core is a circle coil, and inductance value is less, and the sectional area generally by increasing magnet ring improves inductance value, but be confined to the impact of installing space, desirable inductance value requirement cannot be met.The general producer of filter capacitor of filter uses jumbo electrochemical capacitor to reduce ripple simultaneously.But jumbo electrochemical capacitor has very large capacitance and very large equivalent series inductance, in use can produce larger heat because of the frequent polarization of electrolyte, reduce the life-span of electrochemical capacitor.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of requirement that can meet inductance value, again without the need to adopting the high power switching power supply output filtering device of jumbo electrochemical capacitor.
For solving the problem, the technical solution used in the present invention is: high power switching power supply output filtering device, comprise: ferrite E shape magnetic core, be surrounded on the first winding on ferrite E shape magnetic core and the second winding, many groups of noninductive thin-film capacitors in parallel between the first winding and the second winding, described ferrite E shape magnetic core is arranged on direct current output cathode copper bar and direct current output negative pole copper bar both sides, direct current output cathode copper bar is connected with load positive pole copper bar, and direct current output negative pole copper bar, shunt are connected with load negative pole copper bar; Described direct current output cathode copper bar and load positive pole copper bar form the first winding, and described direct current output negative pole copper bar, shunt and load negative pole copper bar form the second winding; The noninductive thin-film capacitor of many groups is installed in parallel between load positive pole copper bar and load negative pole copper bar.
The RLC filter circuit that the inductance number of turn is two circles is formed after the first described winding, the second winding, noninductive thin-film capacitor are connected with load.
Epoxy division board is provided with between described ferrite E shape magnetic core.
Described shunt, load positive pole copper bar, load negative pole copper bar form the sampling point of load voltage and electric current.
The invention has the beneficial effects as follows: output copper bar and load directly form two circle windings of direct current output filtering device, add the inductance value of a times than common structure.Filter capacitor uses the noninductive thin-film capacitor of many groups to be connected in parallel, and the quantity of electric capacity is more, thus reduces the electric current that each electric capacity flows through, and improves radiating effect and the filter effect of each electric capacity.Shunt and load positive pole copper bar and negative pole copper bar realize the current and voltage signals of on-line sampling load, thus the voltage and current that closed-loop adjustment direct current exports, improve the control precision of power supply.The present invention is exclusively used in electrolysis, plating, crystal growth industry, has loss little, and efficiency is high, the advantage of compact conformation, can meet output control precision high, the requirement that ripple is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of high power switching power supply output filtering device of the present invention;
Fig. 2 is the structural representation that Fig. 1 overlooks direction;
Fig. 3 is the sectional structure schematic diagram in A portion in Fig. 2;
Fig. 4 is the catenation principle schematic diagram of high power DC output filtering device of the present invention.
11,12, ferrite E shape magnetic core in figure:, 21, direct current output cathode copper bar, 41, direct current output negative pole copper bar, 22, load positive pole copper bar, 5, shunt, 42, load negative pole copper bar, 31, the 32, first electric capacity connects copper bar, 33, the 34, second electric capacity connects copper bar, 711,712,713, epoxy plate, 8, fixing cage.
Embodiment
Below by specific embodiment, high power switching power supply output filtering device of the present invention is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, in the present embodiment, described high power switching power supply output filtering device comprises: some ferrite E shape magnetic cores 11,12, through direct current output cathode copper bar 21 and the direct current output negative pole copper bar 41 of ferrite E shape magnetic core 11,12.Direct current output cathode copper bar 21, load positive pole copper bar 22 form the first winding.Direct current output negative pole copper bar 41, shunt 5 and load negative pole copper bar 42 form the second winding.First electric capacity connects copper bar 31,32 and second electric capacity and connects between copper bar 33,34 to be installed in parallel to organize noninductive thin-film capacitor more.
In actual fabrication, direct-flow positive pole exports copper bar 21, direct current negative pole exports copper bar 41 and is all surrounded by dielectric film at the containing position of ferrite E shape magnetic core 1, plays electrical isolation insulating effect.Be lined with epoxy plate 711,712,713 between ferrite E shape magnetic core 11 and ferrite E shape magnetic core 12, the thickness of epoxy plate is ferritic magnetic gap, and the epoxy plate by changing different-thickness regulates the inductance value of inductance.Can certainly the sectional area of ferrite E shape magnetic core be changed by the quantity increased or be reduced to right ferrite E shape magnetic core 11,12 thus change inductance value.The outside of ferrite E shape magnetic core 11,12 is provided with fixing cage 8, plays support, fixing and pressuring action.
The high power switching power supply filter of said structure can be used for the direct current output filtering use of high power switching power supply, after being connected with load, composition number of inductor is the RLC filter of two circles, that is: direct-flow positive pole output copper bar 21 is connected with the output cathode of Switching Power Supply, direct current negative pole exports copper bar 41 and is connected with the output negative pole of Switching Power Supply, load positive pole copper bar 22 is connected with the positive pole of load, load negative pole copper bar 42 is connected with the negative pole of load, the both sides of shunt 5 connect load sampling current detection control circuit, load positive pole copper bar 22 is connected load sampling voltage detection control circuit with load negative pole copper bar 42.As shown in Figure 4, this structure makes the output copper bar "+" of Switching Power Supply, exports copper bar "-", load RL, the first winding L 1, second winding L 2, electric capacity C between load positive pole copper bar and load negative pole copper bar, constitute the RLC filter that number of inductor is two circles, there is compact conformation, volume is little, the feature that loss is less, when cost increases few, meet the higher output control precision of high power switching power supply and less ripple requirement.
The above embodiments are the principle of illustrative the invention and effect thereof only, and the embodiment that part is used, but not for limiting the present invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (4)
1. high power switching power supply output filtering device, comprise: ferrite E shape magnetic core, be surrounded on the first winding on ferrite E shape magnetic core and the second winding, many groups of noninductive thin-film capacitors in parallel between the first winding and the second winding, it is characterized in that: described ferrite E shape magnetic core is arranged on direct current output cathode copper bar and direct current output negative pole copper bar both sides, direct current output cathode copper bar is connected with load positive pole copper bar, and direct current output negative pole copper bar, shunt are connected with load negative pole copper bar; Described direct current output cathode copper bar and load positive pole copper bar form the first winding, and described direct current output negative pole copper bar, shunt and load negative pole copper bar form the second winding; The noninductive thin-film capacitor of many groups is installed in parallel between load positive pole copper bar and load negative pole copper bar.
2. high power switching power supply output filtering device according to claim 1, is characterized in that: form the RLC filter circuit that the inductance number of turn is two circles after the first described winding, the second winding, noninductive thin-film capacitor are connected with load.
3. high power switching power supply output filtering device according to claim 1 and 2, is characterized in that: be provided with epoxy division board between described ferrite E shape magnetic core.
4. high power switching power supply output filtering device according to claim 1, is characterized in that: described shunt, load positive pole copper bar, load negative pole copper bar form the sampling point of load voltage and electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004686.6A CN104600969A (en) | 2015-01-06 | 2015-01-06 | High-power switching power supply output filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004686.6A CN104600969A (en) | 2015-01-06 | 2015-01-06 | High-power switching power supply output filtering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104600969A true CN104600969A (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510004686.6A Pending CN104600969A (en) | 2015-01-06 | 2015-01-06 | High-power switching power supply output filtering device |
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| CN (1) | CN104600969A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963484A (en) * | 2018-08-08 | 2018-12-07 | 深圳威迈斯电源有限公司 | High current air guide and Vehicular charger with the air guide |
-
2015
- 2015-01-06 CN CN201510004686.6A patent/CN104600969A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963484A (en) * | 2018-08-08 | 2018-12-07 | 深圳威迈斯电源有限公司 | High current air guide and Vehicular charger with the air guide |
| CN108963484B (en) * | 2018-08-08 | 2024-01-26 | 深圳威迈斯新能源股份有限公司 | Heavy current guide member and vehicle-mounted charger with same |
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Application publication date: 20150506 |
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| WD01 | Invention patent application deemed withdrawn after publication |