CN104837279A - High-reliability storage desk lamp - Google Patents
High-reliability storage desk lamp Download PDFInfo
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- CN104837279A CN104837279A CN201510279892.8A CN201510279892A CN104837279A CN 104837279 A CN104837279 A CN 104837279A CN 201510279892 A CN201510279892 A CN 201510279892A CN 104837279 A CN104837279 A CN 104837279A
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Abstract
The invention provides a high-reliability storage desk lamp which comprises a desk lamp base, a switching power supply, a lamp support and a lamp shade, wherein the switching power supply comprises a three-phase converter; the desk lamp base is a cylinder; and a storage drawer is arranged on the side surface, far away from the lamp support, of the cylinder. The storage drawer with the switching power supply of the three-phase resonant converter of a central-tapped transformer is low in loss and high in power density, can prolong and improve the working service life and the reliability of the desk lamp, provides effective collection of small articles, and reasonably utilizes a space of the desk lamp base.
Description
Technical field
The invention belongs to illuminations field, particularly a kind of high reliability high reliability storage desk lamp.
Background technology
Desk lamp becomes people already and to live the necessity of study, especially for needing be in study or the student in the study of school room for individual study.
Desk lamp traditional is at present while meeting illuminations function, many uses Switching Power Supply carries out folding, the course of work of the Switching Power Supply that traditional desk lamp uses is by " copped wave ", namely the direct voltage of input is cut into amplitude and equals that the pulse voltage of input voltage amplitude realizes.The duty ratio of pulse is regulated by the controller of Switching Power Supply; Once input voltage is cut into ac square wave, its amplitude just can be raised by transformer or reduce, just can be increased the magnitude of voltage of output by the secondary winding number increasing transformer, finally these AC wave shape just obtain VD after rectifying and wave-filtering;
But there is switching loss, the surge voltage that can produce when cut-off switch element and the desk lamp poor work stability caused because of voltage instability in the desk lamp of the Switching Power Supply using above-mentioned desk lamp to use, its loss is high, power density is low, working life and the low problem of reliability; And only play traditional desk lamp of illuminations effect, and traditional function of desk lamp is single, its base while taking desk-top space, when student learns before table, except putting desk lamp, a large amount of books and data etc. is also had to need to launch, room for individual study desk that is especially less for desk-top space and that keep off without lattice, during the little article of what student used ransack rubber, note or pen and so on, memory is dropped or is difficult to look for; The base of traditional desk lamp then except desk lamp is played stabilization and its on be equipped with except switch, be not effectively used.
Summary of the invention
Technical problem to be solved by this invention, be for the defect in aforementioned background art and deficiency, propose a kind of desk lamp with the mains switch of the three-phase resonate converter of interphase reactor transformer, its loss is low, power density is high, can improve working life and the reliability of desk lamp; And Bulb holder of table lamp can be set to can storing base.
The present invention is achieved through the following technical solutions above-mentioned purpose:
For the technical disadvantages that existing desk lamp exists, redesign a kind of high reliability storage desk lamp, comprise Desk lamp feet, Switching Power Supply, lamp bracket and lampshade, it is characterized in that, described Switching Power Supply comprises the three-phase resonate converter with interphase reactor transformer.
Further, its topological structure is: comprise input voltage Uin, former limit and secondary and all have tapped transformer T, and there are 3 groups of vice-side winding, switch element S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, diode D1, D2, D3, D4, D5, D6, D7, D8, inductance L 1, L2, L3.Above-mentioned switch element can be IGBT, and diode is fast recovery diode.
Further, concrete annexation is: comprise input voltage Uin, former limit and secondary and all have tapped transformer T, switch element S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, diode D1, D2, D3, D4, D5, D6, D7, D8, inductance L 1, L2, L3 and controller, described each switching tube has antiparallel parasitic diode and parasitic capacitance, described transformer T has 3 vice-side winding, first vice-side winding is N3, N4, second vice-side winding is N5, N6, and the 3rd vice-side winding is N7, N8;
Further, the different name end of former limit winding centre tap the first half winding connects the anode of diode D1, the Same Name of Ends of former limit winding centre tap the latter half winding connects the anode of diode D2, the Same Name of Ends of former limit winding centre tap the first half winding N1 is connected with the anode of input voltage Uin with the tie point of the different name end of former limit winding centre tap the latter half winding N2, and the negative terminal of input voltage Uin connects the negative electrode of diode D1, D2;
Further, the first structure exporting phase is: the collector electrode of anode connecting valve element S1, S3 of input voltage Uin, the emitter of negative terminal connecting valve element S2, S4 of input voltage Uin; The emitter of switch element S1 connects the anode of diode D3, the negative electrode of diode D3 connects the Same Name of Ends of first vice-side winding centre tap the first half winding, the different name end of first vice-side winding centre tap the first half winding N3 is connected with the Same Name of Ends of first vice-side winding centre tap the latter half winding N4, and its tie point is connected with one end of inductance L 1, the different name end of first vice-side winding centre tap the latter half winding is connected with the anode of diode D4, the collector electrode of the negative electrode connecting valve element S2 of diode D4; The emitter of switch element S3 is connected with the collector electrode of switch element S4, and the other end of its tie point and inductance L 1 and load are connected;
Further, the second structure exporting phase is: the collector electrode of anode connecting valve element S5, S7 of input voltage Uin, the emitter of negative terminal connecting valve element S6, S8 of input voltage Uin; The emitter of switch element S5 connects the anode of diode D5, the negative electrode of diode D5 connects the Same Name of Ends of second vice-side winding centre tap the first half winding, the different name end of second vice-side winding centre tap the first half winding N5 is connected with the Same Name of Ends of second vice-side winding centre tap the latter half winding N6, and its tie point is connected with one end of inductance L 2, the different name end of second vice-side winding centre tap the latter half winding is connected with the anode of diode D6, the collector electrode of the negative electrode connecting valve element S6 of diode D6; The emitter of switch element S7 is connected with the collector electrode of switch element S8, and the other end of its tie point and inductance L 2 and load are connected;
3rd structure exporting phase is: the collector electrode of anode connecting valve element S9, S11 of input voltage Uin, the emitter of negative terminal connecting valve element S10, S12 of input voltage Uin; The emitter of switch element S9 connects the anode of diode D7, the negative electrode of diode D7 connects the Same Name of Ends of the 3rd vice-side winding centre tap the first half winding, the different name end of the 3rd vice-side winding centre tap the first half winding N7 is connected with the Same Name of Ends of the 3rd vice-side winding centre tap the latter half winding N8, and its tie point is connected with one end of inductance L 3, the different name end of the 3rd vice-side winding centre tap the latter half winding is connected with the anode of diode D8, the collector electrode of the negative electrode connecting valve element S10 of diode D8; The emitter of switch element S11 is connected with the collector electrode of switch element S12, and the other end of its tie point and inductance L 3 and load are connected; Controller control switch S1 and S2 alternate conduction, S3 and S4 alternate conduction, S5 and S6 alternate conduction, S7 and S8 alternate conduction, S9 and S10 alternate conduction, S11 and S12 alternate conduction, each output is mutually by resonance circuit that the stray capacitance of respective inductance L 1, L2, L3 and each switch element is formed, the each switch element of conducting when the terminal voltage of each switch element is 0, thus it is open-minded to realize no-voltage.
Further, described switching tube is IGBT or MOSFET.
Further, described input voltage is storage battery, fuel cell or photovoltaic cell.
Further, described each diode is fast recovery diode or Schottky diode.
Further, described load is three-phase alternating current load or rectified three-phase circuit.
Further, described Desk lamp feet is cylinder.
Further, described cylindrical sides is provided with storage drawer away from lamp bracket side.
Compared with prior art, high reliability desk lamp of the present invention has following advantages:
The switching frequency that the desk lamp with the Switching Power Supply of the three-phase resonate converter of interphase reactor transformer utilizes the form of interphase reactor transformer can realize by control circuit control switch element, makes output voltage become predetermined value.
And because electric current flows through negative direction during each switching elements ON, therefore do not produce switching losses.
And because carried out resonance action, surge voltage during cut-off switch element also can not be produced.
While realizing energy feedback, utilize the parasitic capacitance of inductance and switch element to form Sofe Switch form, do not have unnecessary power capacity, its loss is low, and power density is high, can improve working life and the reliability of desk lamp.
Desk lamp feet is provided with function of containing articles, and ensure that effective storage of the little article such as pen, note and rubber, being convenient to user searches use, and the increase of Desk lamp feet thickness, only increased the height of desk lamp, former to take desk-top space constant, and effective and reasonable make use of Desk lamp feet space.
Accompanying drawing explanation
Fig. 1: Table lamp structure schematic diagram of the present invention;
Fig. 2: the structural representation with the three-phase resonate converter of interphase reactor transformer of the present invention;
Fig. 3: the control impuls sequential chart of switch element S1, S2, S3, S4.
Wherein, 1-Desk lamp feet, 2-Switching Power Supply, 3-lamp bracket, 4-lampshade, 5-drawer, U
in-input voltage, T-tapped transformer, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12-switch element, D1, D2, D3, D4, D5, D6, D7, D8-diode, L1, L2, L3-inductance, N1-former limit winding centre tap the first half winding, N2-former limit winding centre tap the latter half winding, N3, N4-first vice-side winding, N5, N6-second vice-side winding, N7, N8 the-the 3rd vice-side winding.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, high reliability desk lamp of the present invention comprises with the Desk lamp feet 1 of function of containing articles, Switching Power Supply 2, lamp bracket 3 and lampshade 4, described Switching Power Supply 2 comprises the three-phase resonate converter with interphase reactor transformer, described Desk lamp feet 1 is provided with Switching Power Supply 2, and Desk lamp feet 1 side is provided with storage drawer 5 away from the position of lamp bracket 3.
As shown in Figure 2, the three-phase resonate converter of the mains switch 2 in desk lamp of the present invention comprises input voltage Uin, former limit and secondary all have tapped transformer T, switch element S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, diode D1, D2, D3, D4, D5, D6, D7, D8, inductance L 1, L2, L3 and controller, described each switching tube has antiparallel parasitic diode and parasitic capacitance, described transformer T has 3 vice-side winding, first vice-side winding is N3, N4, second vice-side winding is N5, N6, 3rd vice-side winding is N7, N8,
The different name end of former limit winding centre tap the first half winding connects the anode of diode D1, the Same Name of Ends of former limit winding centre tap the latter half winding connects the anode of diode D2, the Same Name of Ends of former limit winding centre tap the first half winding N1 is connected with the anode of input voltage Uin with the tie point of the different name end of former limit winding centre tap the latter half winding N2, and the negative terminal of input voltage Uin connects the negative electrode of diode D1, D2;
First structure exporting phase is: the collector electrode of anode connecting valve element S1, S3 of input voltage Uin, the emitter of negative terminal connecting valve element S2, S4 of input voltage Uin; The emitter of switch element S1 connects the anode of diode D3, the negative electrode of diode D3 connects the Same Name of Ends of first vice-side winding centre tap the first half winding, the different name end of first vice-side winding centre tap the first half winding N3 is connected with the Same Name of Ends of first vice-side winding centre tap the latter half winding N4, and its tie point is connected with one end of inductance L 1, the different name end of first vice-side winding centre tap the latter half winding is connected with the anode of diode D4, the collector electrode of the negative electrode connecting valve element S2 of diode D4; The emitter of switch element S3 is connected with the collector electrode of switch element S4, and the other end of its tie point and inductance L 1 and load are connected;
Second structure exporting phase is: the collector electrode of anode connecting valve element S5, S7 of input voltage Uin, the emitter of negative terminal connecting valve element S6, S8 of input voltage Uin; The emitter of switch element S5 connects the anode of diode D5, the negative electrode of diode D5 connects the Same Name of Ends of second vice-side winding centre tap the first half winding, the different name end of second vice-side winding centre tap the first half winding N5 is connected with the Same Name of Ends of second vice-side winding centre tap the latter half winding N6, and its tie point is connected with one end of inductance L 2, the different name end of second vice-side winding centre tap the latter half winding is connected with the anode of diode D6, the collector electrode of the negative electrode connecting valve element S6 of diode D6; The emitter of switch element S7 is connected with the collector electrode of switch element S8, and the other end of its tie point and inductance L 2 and load are connected;
3rd structure exporting phase is: the collector electrode of anode connecting valve element S9, S11 of input voltage Uin, the emitter of negative terminal connecting valve element S10, S12 of input voltage Uin; The emitter of switch element S9 connects the anode of diode D7, the negative electrode of diode D7 connects the Same Name of Ends of the 3rd vice-side winding centre tap the first half winding, the different name end of the 3rd vice-side winding centre tap the first half winding N7 is connected with the Same Name of Ends of the 3rd vice-side winding centre tap the latter half winding N8, and its tie point is connected with one end of inductance L 3, the different name end of the 3rd vice-side winding centre tap the latter half winding is connected with the anode of diode D8, the collector electrode of the negative electrode connecting valve element S10 of diode D8; The emitter of switch element S11 is connected with the collector electrode of switch element S12, and the other end of its tie point and inductance L 3 and load are connected;
Export for first: the first each switch element S1 ~ S4 exporting phase carries out alternate conduction and shutoff by controller according to the pulse sequence figure of Fig. 3; From circuit structure and above-mentioned pulse sequence figure, at S1, S2 blocking interval, energy in the winding of former limit feeds back to input power by diode D1, D2, and one of them conducting of controller control S3 or S4, resonance circuit is formed by the parasitic capacitance of inductance L and switching tube S1, S2, when the terminal voltage of S1, S2 is 0, conducting S1 or S2, realizes no-voltage open-minded; At S3, S4 blocking interval, one of them conducting of controller control S1 or S2, the resonance circuit formed by the parasitic capacitance of inductance L and switching tube S3, S4, conducting S3 or S4 when the terminal voltage of S3, S4 is 0, thus it is open-minded to realize no-voltage.Other two driving pulses exporting phase are according to corresponding relation advanced or delayed 120 ° respectively, and control mode and first exports similar, belongs to basic phase-shift control mode, repeats no more.
Switch element S can replace with MOSFET, and input power is chargeable storage, fuel cell or photovoltaic cell etc.Load can be three-phase alternating current load or further three phase rectifier is for DC load, and the form of rectification is all prior aries, repeats no more.
Above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment to invention has been detailed description, the those of ordinary skill in described field is to be understood that: still can modify to the specific embodiment of the present invention or replace on an equal basis, and not departing from any amendment of spirit and scope of the invention or equivalent replacement, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. a high reliability storage desk lamp, comprises Desk lamp feet, Switching Power Supply, lamp bracket and lampshade, it is characterized in that, described Switching Power Supply comprises three-phase inverter.
2. desk lamp as claimed in claim 1, it is characterized in that, described three-phase inverter comprises input voltage Uin, former limit and secondary all have tapped transformer T, switch element S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, diode D1, D2, D3, D4, D5, D6, D7, D8, inductance L 1, L2, L3 and controller, described each switching tube has antiparallel parasitic diode and parasitic capacitance, described transformer T has 3 vice-side winding, first vice-side winding is N3, N4, second vice-side winding is N5, N6, 3rd vice-side winding is N7, N8,
The different name end of former limit winding centre tap the first half winding connects the anode of diode D1, the Same Name of Ends of former limit winding centre tap the latter half winding connects the anode of diode D2, the Same Name of Ends of former limit winding centre tap the first half winding N1 is connected with the anode of input voltage Uin with the tie point of the different name end of former limit winding centre tap the latter half winding N2, and the negative terminal of input voltage Uin connects the negative electrode of diode D1, D2;
First structure exporting phase is: the collector electrode of anode connecting valve element S1, S3 of input voltage Uin, the emitter of negative terminal connecting valve element S2, S4 of input voltage Uin; The emitter of switch element S1 connects the anode of diode D3, the negative electrode of diode D3 connects the Same Name of Ends of first vice-side winding centre tap the first half winding, the different name end of first vice-side winding centre tap the first half winding N3 is connected with the Same Name of Ends of first vice-side winding centre tap the latter half winding N4, and its tie point is connected with one end of inductance L 1, the different name end of first vice-side winding centre tap the latter half winding is connected with the anode of diode D4, the collector electrode of the negative electrode connecting valve element S2 of diode D4; The emitter of switch element S3 is connected with the collector electrode of switch element S4, and the other end of its tie point and inductance L 1 and load are connected;
Second structure exporting phase is: the collector electrode of anode connecting valve element S5, S7 of input voltage Uin, the emitter of negative terminal connecting valve element S6, S8 of input voltage Uin; The emitter of switch element S5 connects the anode of diode D5, the negative electrode of diode D5 connects the Same Name of Ends of second vice-side winding centre tap the first half winding, the different name end of second vice-side winding centre tap the first half winding N5 is connected with the Same Name of Ends of second vice-side winding centre tap the latter half winding N6, and its tie point is connected with one end of inductance L 2, the different name end of second vice-side winding centre tap the latter half winding is connected with the anode of diode D6, the collector electrode of the negative electrode connecting valve element S6 of diode D6; The emitter of switch element S7 is connected with the collector electrode of switch element S8, and the other end of its tie point and inductance L 2 and load are connected;
3rd structure exporting phase is: the collector electrode of anode connecting valve element S9, S11 of input voltage Uin, the emitter of negative terminal connecting valve element S10, S12 of input voltage Uin; The emitter of switch element S9 connects the anode of diode D7, the negative electrode of diode D7 connects the Same Name of Ends of the 3rd vice-side winding centre tap the first half winding, the different name end of the 3rd vice-side winding centre tap the first half winding N7 is connected with the Same Name of Ends of the 3rd vice-side winding centre tap the latter half winding N8, and its tie point is connected with one end of inductance L 3, the different name end of the 3rd vice-side winding centre tap the latter half winding is connected with the anode of diode D8, the collector electrode of the negative electrode connecting valve element S10 of diode D8; The emitter of switch element S11 is connected with the collector electrode of switch element S12, and the other end of its tie point and inductance L 3 and load are connected.
3. desk lamp as claimed in claim 2, it is characterized in that, described three phase controllers control switch S1 and S2 alternate conduction, S3 and S4 alternate conduction, S5 and S6 alternate conduction, S7 and S8 alternate conduction, S9 and S10 alternate conduction, S11 and S12 alternate conduction, each output is mutually by resonance circuit that the parasitic capacitance of respective inductance L 1, L2, L3 and each switch element is formed, the each switch element of conducting when the terminal voltage of each switch element is 0, thus it is open-minded to realize no-voltage.
4. desk lamp as claimed in claim 2, it is characterized in that, described switching tube is IGBT or MOSFET.
5. desk lamp as claimed in claim 2, it is characterized in that, described input voltage is storage battery, fuel cell or photovoltaic cell.
6. desk lamp as claimed in claim 2, it is characterized in that, described diode all adopts fast recovery diode or Schottky diode.
7. desk lamp as claimed in claim 2, it is characterized in that, described load is three-phase alternating current load or rectified three-phase circuit.
8. desk lamp as claimed in claim 1, it is characterized in that, described Desk lamp feet is cylinder.
9. desk lamp as claimed in claim 8, it is characterized in that, described cylindrical sides is provided with storage drawer away from lamp bracket side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510279892.8A CN104837279A (en) | 2014-12-12 | 2015-05-27 | High-reliability storage desk lamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2014108579652 | 2014-12-12 | ||
| CN201410857965 | 2014-12-12 | ||
| CN201510279892.8A CN104837279A (en) | 2014-12-12 | 2015-05-27 | High-reliability storage desk lamp |
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| CN104837279A true CN104837279A (en) | 2015-08-12 |
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| CN201510279892.8A Pending CN104837279A (en) | 2014-12-12 | 2015-05-27 | High-reliability storage desk lamp |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581664A (en) * | 2003-08-08 | 2005-02-16 | 立锜科技股份有限公司 | Driving circuit and method for three-phase current thansformer |
| CN101232767A (en) * | 2007-08-06 | 2008-07-30 | 葛世潮 | Wide range continuous light regulating energy-saving desk lamp without stroboflash |
| KR20090053416A (en) * | 2007-11-23 | 2009-05-27 | 엘지전자 주식회사 | Apparatus for power of pls |
| CN201651976U (en) * | 2010-04-20 | 2010-11-24 | 李建雄 | Multifunctional table lamp |
| CN101944745A (en) * | 2010-09-06 | 2011-01-12 | 北京理工大学 | Energy storage system and control method thereof |
-
2015
- 2015-05-27 CN CN201510279892.8A patent/CN104837279A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581664A (en) * | 2003-08-08 | 2005-02-16 | 立锜科技股份有限公司 | Driving circuit and method for three-phase current thansformer |
| CN101232767A (en) * | 2007-08-06 | 2008-07-30 | 葛世潮 | Wide range continuous light regulating energy-saving desk lamp without stroboflash |
| KR20090053416A (en) * | 2007-11-23 | 2009-05-27 | 엘지전자 주식회사 | Apparatus for power of pls |
| CN201651976U (en) * | 2010-04-20 | 2010-11-24 | 李建雄 | Multifunctional table lamp |
| CN101944745A (en) * | 2010-09-06 | 2011-01-12 | 北京理工大学 | Energy storage system and control method thereof |
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Application publication date: 20150812 |