CN205377668U - Transformer and switching power supply device - Google Patents
Transformer and switching power supply device Download PDFInfo
- Publication number
- CN205377668U CN205377668U CN201620065625.0U CN201620065625U CN205377668U CN 205377668 U CN205377668 U CN 205377668U CN 201620065625 U CN201620065625 U CN 201620065625U CN 205377668 U CN205377668 U CN 205377668U
- Authority
- CN
- China
- Prior art keywords
- winding
- secondary winding
- transformator
- magnetic core
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Coils Of Transformers For General Uses (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model provides a transformer and switching power supply device. This transformer can restrain that each output voltage is well -behaved to leave. This switching power supply device uses this transformer. The transformer (T) have: magnetic core (10), primary winding (11), it assembles on magnetic core (10), air gap (15), it sets up the position that is equipped with primary winding (11) at magnetic core (10), and the secondary winding more than two (12, 13), they assemble on magnetic core (10), its characterized in that, secondary winding more than two just is the equidistance with air gap (15) by the setting in the both sides of primary winding (11) in the spool direction of primary winding (11). The control circuit that switch element that the switching power supply device has transformer (T), be connected with transformer (T) primary winding (11) and going on this switch element controlled.
Description
Technical field
This utility model relates to transformator and uses the switching power unit of this transformator, particularly to the structure of transformator.
Background technology
In order to make electrical equipment and circuit carry out action, it is necessary to galvanic current pressure, in order to generate this DC voltage, use switching power unit in the past.The switching power unit voltage to supplying from external power source carries out rectification and smooth, carry out switch motion by thyristor and be input to a winding of transformator, supplying DC voltage from the Secondary Winding of transformator to load via based on the smooth of smooth circuit.Further, output voltage is monitored, by control circuit carry out thyristor time rate adjustment so that output voltage keep constant.
In this switching power unit, it was known to the device of multi output in the past.In order to constitute this device, transformator, except the winding having magnetic core and be assemblied on this magnetic core, also has plural Secondary Winding.
Patent documentation 1: Japanese Unexamined Patent Publication 05-049257 publication
Have in the multi output transformator of plural Secondary Winding at above-mentioned this set, exist due to and that make the inductance of each Secondary Winding different problem different to the distance of each Secondary Winding from the air gap being arranged on magnetic core.Figure 14 exemplifies the sectional view of this existing multi output transformator.As shown in figure 14, when being arranged on the Secondary Winding 112,113 of both sides of a winding 111 to be configured relative to air gap 115 non-equidistant being arranged on magnetic core 110 and asymmetrical mode, make inductance different owing to the distance between each Secondary Winding 112,113 and air gap 115 is different.Therefore, though produce make the output voltage from each Secondary Winding 112,113 identical also can occur well-behaved from problem.
And, as shown in figure 16, even if the configuration position of each Secondary Winding 112,113 is equidistant with air gap 115, when different from the distance between a winding 111, different from the coefficient of coup of winding 111 coupling, though produce to make the output voltage from each Secondary Winding 112,113 identical also can occur well-behaved from problem.
Utility model content
This utility model completes to solve above-mentioned this problem, it is provided that can suppress each output voltage well-behaved from transformator and use this transformator switching power unit.
(1) transformator of the present utility model has: magnetic core；Winding, it is assemblied on described magnetic core；Air gap, it is arranged on the position being equipped with a described winding of described magnetic core；And plural Secondary Winding, they are assemblied on described magnetic core, it is characterised in that Secondary Winding more than said two is arranged on the both sides of a described winding on the spool direction of a described winding and is equidistant with described air gap.
Further, transformator of the present utility model can also have following structure.
(2) described transformator has the plural auxiliary winding being assemblied on described magnetic core, and described auxiliary winding is disposed adjacent with described Secondary Winding respectively on the spool direction of a described winding, and described auxiliary winding is connected in parallel with each other.
(3) described transformator has the plural auxiliary winding being assemblied on described magnetic core, and described Secondary Winding is configured to than described auxiliary winding closer to a described winding.
(4) described transformator has the plural auxiliary winding being assemblied on described magnetic core, described auxiliary winding is disposed adjacent with described Secondary Winding respectively on the spool direction of a described winding, and described auxiliary winding is connected in parallel with each other, described Secondary Winding is configured to than described auxiliary winding closer to a described winding.
Switching power unit of the present utility model is characterised by, this switching power unit has: have the transformator of the structure of above-mentioned (1)；With the switch element that the one of described transformator time winding is connected；And to the control circuit that described switch element is controlled.Further, this transformator can also be the transformator of the structure with above-mentioned (2), above-mentioned (3) or above-mentioned (4).
According to this utility model, it is possible to obtain reducing the difference of the inductance value of each Secondary Winding and with the difference of the coefficient of coup of a winding coupled, can suppress each output voltage well-behaved from transformator and use the switching power unit of this transformator.
Accompanying drawing explanation
Fig. 1 is the integrally-built schematic sectional view of the transformator illustrating the 1st embodiment.
Fig. 2 is the circuit diagram of the switching power unit of the 1st embodiment.
Fig. 3 is the curve chart of the time change of the output voltage of each Secondary Winding illustrating the transformator from the 1st embodiment.
Fig. 4 is the integrally-built schematic sectional view of the transformator illustrating the 2nd embodiment.
Fig. 5 is the circuit diagram of the switching power unit of the 2nd embodiment.
Fig. 6 be illustrate in the transformator of the 1st embodiment, the curve chart of the time change of the output voltage from each Secondary Winding (after rectification) when changing load balance.
Fig. 7 be illustrate in the transformator of the 2nd embodiment, the curve chart of the time change of the output voltage from each Secondary Winding (after rectification) when changing load balance.
Fig. 8 is the output voltage waveforms of the Secondary Winding before rectification, Fig. 8 (a) is the electric current that sets and flow through Secondary Winding 12 as 0A (non-loaded), the situation that electric current is 0.1A flowing through Secondary Winding 13, and Fig. 8 (b) is that the opposite to that electric current that flows through Secondary Winding 12 of setting is as 0.1A, the situation that electric current is 0A (non-loaded) flowing through Secondary Winding 13.
Fig. 9 is the curve chart of the voltage time change of the auxiliary winding illustrating the 1st embodiment when changing load balance, Fig. 9 (a) is the electric current setting the Secondary Winding situation that electric current is 0A as 0.1A, another Secondary Winding, and Fig. 9 (b) is the opposite to that electric current situation that electric current is 0.1A as 0A, another Secondary Winding setting a Secondary Winding.
Figure 10 is the curve chart of each voltage time change assisting winding of the transformator illustrating the 2nd embodiment.
Figure 11 is the electric current setting Secondary Winding 12 as the electric current of 0A, Secondary Winding 13 is the voltage waveform (before rectification) during 0.1A.
Figure 12 is the integrally-built schematic sectional view of the transformator illustrating other embodiments.
Figure 13 is the circuit diagram of the switching power unit of other embodiments.
Figure 14 is the integrally-built schematic sectional view illustrating existing transformator.
Figure 15 is the curve chart of the time change of the output voltage illustrating each Secondary Winding from existing transformator.
Figure 16 is the integrally-built schematic sectional view illustrating existing transformator.
Figure 17 is the curve chart of the time change of the output voltage illustrating each Secondary Winding from existing transformator.
Label declaration
10: magnetic core；10a: middle foot；11: windings；12,13,17: Secondary Winding；14,16: auxiliary winding；15: air gap；21: switch element；22: control circuit；23,24: diode (rectification unit)；25,26: capacitor (smooth unit)；T: transformator；The straight line that C: winding is consistent with the spool of Secondary Winding.
Detailed description of the invention
Below, with reference to accompanying drawing, the transformator of embodiment of the present utility model is illustrated with the switching power unit using this transformator.First this transformator is illustrated, then the structure of the switching power unit using this transformator is illustrated.
[1. the 1st embodiment]
[1-1. structure]
Fig. 1 is the integrally-built schematic sectional view of the transformator illustrating present embodiment.The transformator T voltage to supplying from external power source carries out transformation, supplies electric power to the transformator T circuit being connected or external equipment even load.As it is shown in figure 1, this transformator T has magnetic core 10, the winding 11 being assemblied on magnetic core 10, plural Secondary Winding 12,13 (being two here) and auxiliary winding 14.
Magnetic core 10 is such as the magnetics such as FERRITE CORE, stacked steel plate or compressed-core.The shape of the magnetic core 10 of present embodiment is cross section is substantially θ shape, but, as long as winding 11, a Secondary Winding 12,13 can be assembled and assists winding 14, it is not limited to this.
Magnetic core 10 sets up the middle foot 10a being equipped with rectilinear form in the central portion separately.In this on foot 10a, in the way of making the spool of each winding 11～14 become same straight line C, it is equipped with each winding 11～14.The position being equipped with a winding 11 of magnetic core 10 is provided with air gap 15.That is, middle foot 10a is provided with air gap 15.It addition, Secondary Winding 12,13 and auxiliary winding 14 are to be wound on around middle foot 10a in the way of polarity is contrary with a winding 11, magnetic core 10, each winding 11～14 are insulated respectively through the not shown bobbin being made up of insulant such as resins.
One time winding 11 is connected with external power source, to Secondary Winding 12,13, auxiliary winding 14 feeds.It is connected with external circuit or external equipment even load between two terminals of Secondary Winding 12,13, makes to be connected with these circuit or load from the powered electric power of winding 11.Secondary Winding 12,13 such as be used for make the buffer circuit carrying out action such as IGBT or MOS be connected.
On the spool direction of a winding 11, Secondary Winding 12,13 is arranged on the both sides of a winding 11.In other words, to be configured to both of which adjacent with a winding 11 for each Secondary Winding 12,13.Preferably on the spool direction of a winding 11, to be configured with an equidistant mode of winding 11.Further, on the spool direction of a winding 11, each Secondary Winding 12,13 is to be configured with the equidistant mode of air gap 15.
In the present embodiment, on the spool direction of a winding 11,12,13 and winding of Secondary Winding is equidistant and equidistant with air gap 15.That is, Secondary Winding 12,13 is configured to centered by a winding 11 symmetrical and symmetrical centered by air gap 15.
Auxiliary winding 14 is connected with the aftermentioned control circuit that switch element is controlled.Auxiliary winding 14 is subject to electricity, the driving power voltage of supply control circuit from a winding 11.Auxiliary winding 14 is arranged on the side of Secondary Winding 13 in the way of making spool direction identical, but it is also possible to be arranged on the side of another Secondary Winding 12.
There is the transformator T of said structure for switching power unit.Fig. 2 is the circuit diagram of the switching power unit using this transformator T.Owing to the Secondary Winding 12 of transformator T, l3 arrange multiple (being two here), so, the switching power unit of present embodiment is the supply unit of multi output.This switching power unit is such as the Switching Power Supply of the mode of flybacking, and is used for making quasiconductor carry out switch process.
Specifically, this switching power unit have transformator T, switch element 21, the control circuit 22 that switch element 21 is controlled, diode 23,24, capacitor 25,26.This device can also have rectifier/smoothing circuit.Rectifier/smoothing circuit is connected between external power source and a winding 11 of transformator T, the voltage supplied from external power source carries out rectification and smooth.
Switch element 21 is the thyristors such as FET.Switch element 21 is connected with a winding 11 of transformator T, and the input voltage for a winding 11 is controlled.Control circuit 22 is configured to comprise IC, it is connected with the auxiliary winding 14 being arranged on outlet side and switch element 21, accept power supply voltage supplying from auxiliary winding 14, control the time rate of the on/off of switch element 21, in order to carry out the control of input voltage for a winding 11.That is, control circuit 22 is controlled such that the output voltage of Secondary Winding 12,13 keeps assigned voltage respectively.
Such as, control circuit 22 be configured to include the voltage monitor unit of the voltage of detection auxiliary winding 14, to smooth unit, the photo-coupler being made up of light-emitting component and photo detector and IC such as the capacitors that the output voltage from auxiliary winding 14 smooths.In this situation, it is shown that during an example of the control that control circuit 22 carries out, first, via smooth unit, output voltage values that voltage monitor unit detects, from auxiliary winding 14 is imported into IC.IC is according to this magnitude of voltage and assists the winding 14 volume number with Secondary Winding 12,13 than the output voltage calculating Secondary Winding 12,13, according to the generation of this voltage for making the control signal of the output voltage stabilization of Secondary Winding 12,13.Then, this control signal is exported the light-emitting component of the photo-coupler being connected with IC by IC.The control signal inputted is converted to optical signal by light-emitting component, and this optical signal exports the photo detector being connected with switch element 21.And then, the optical signal inputted is converted to the signal of telecommunication by this photo detector, accepts this signal and carrys out the time rate of alternation switch element 21.
Capacitor 25,26 is connected with Secondary Winding 12,13.Diode 23,24 is connected between Secondary Winding 12,13 and capacitor 25,26, and the output voltage from Secondary Winding 12,13 is carried out rectification.Further, smoothed by the voltage after 25,26 pairs of rectifications of capacitor, generate DC voltage.
[1-2. action effect]
(1) the transformator T of present embodiment has: magnetic core 10；Winding 11, it is assemblied on magnetic core 10；Air gap 15, it is arranged on the position being equipped with a winding 11 of magnetic core 10；And plural Secondary Winding 12,13, they are assemblied on magnetic core 10, are arranged on the both sides of a winding 11 and with air gap 15 for equidistant on the spool direction of a winding 11.Thus, the difference of the difference reducing the inductance of each Secondary Winding 12,13 and the coefficient of coup coupled with winding 11, as shown in Figure 3, it is possible to suppress the output voltage from each Secondary Winding 12,13 occur when stable well-behaved from.
It is compared to illustrate the effect of present embodiment in further detail with prior art.When the Secondary Winding 112,113 of the both sides being arranged on a winding 111 shown in Figure 14 is relative to the existing transformator that air gap 115 is non-equidistant, when enumerating an example, when rank (order) that inductance value is tens of μ H in Secondary Winding 112,113 during rank difference in individual position, as shown in figure 15, from Secondary Winding 112,113 output voltage occur well-behaved from.This is that the difference of the inductance value due to Secondary Winding 112,113 is relatively big and cause.In the example of Figure 14, inductance value is only equal at ten, and on the other hand, the inductance value of the Secondary Winding 12,13 of the transformator T of present embodiment can 10-1Position is equal, inductance value consistent in there is the difference of two.
And, as shown in figure 16, when configuration position and the distance of air gap 115 of each Secondary Winding 112,113 is the different existing transformator of equidistant and a winding 111 distance, 10 when the rank that inductance value is tens of μ H in Secondary Winding 112,113-1Position rank difference time, as shown in figure 17, from Secondary Winding 112,113 output voltage occur well-behaved from.But although this is owing to roughly equal the coupling with a winding 111 of two inductance value there are differences and causes.In the example of Figure 16, inductance value is only equal in individual position.Further, the coefficient of coup that each Secondary Winding 112,113 couples with winding 111 is only 10-1Position is equal.On the other hand, the inductance value of the Secondary Winding 12,13 of the transformator T of present embodiment can 10-1Position is equal, inductance value consistent in there is the difference of one.Further, the coefficient of coup coupled with winding 11 of the transformator T of present embodiment is 10-2Rank equal, the coefficient of coup consistent in there is the difference of one.
As mentioned above, according to present embodiment, due to the difference that can reduce the inductance value of each Secondary Winding 12,13 and the difference of the coefficient of coup coupled with winding 11, so, obtain suppressing exponentially the output voltage from each Secondary Winding 12,13 well-behaved from transformator and use the switching power unit of this transformator.
[2. the 2nd embodiment]
[2-1. structure]
Use Fig. 4～Figure 11 that the 2nd embodiment is illustrated.The basic structure of the 2nd embodiment is identical with the 1st embodiment.Thus, only the difference with the 1st embodiment is illustrated, the part identical with the 1st embodiment is marked identical label detailed.
Fig. 4 is the integrally-built schematic sectional view of the transformator illustrating the 2nd embodiment.Fig. 5 is the circuit diagram of the switching power unit of the transformator T using the 2nd embodiment.The auxiliary winding 14,16 that two or more (being two here) is set it is different in that with the 1st embodiment.
That is, being different in that, auxiliary winding 14,16 is disposed adjacent with Secondary Winding 12,13 respectively on the spool direction of each winding 11～13, and assists winding 14,16 to be connected in parallel with each other.In the present embodiment, auxiliary winding 14,16 is arranged to, and on spool direction, and the distance between air gap 15 is equidistant, and symmetrical relative to air gap 15.But, auxiliary winding 14,16 is it is not necessary to be disposed relative to air gap 15 symmetry.
Further, in the present embodiment, Secondary Winding 12,13 is configured to than auxiliary winding 14,16 closer to a winding 11.It addition, each winding 11～16 is insulated by the bobbin that is made up of insulant such as resins.Further, as it is shown in figure 5, auxiliary winding 14,16 is also connected in parallel with control circuit 22.
[2-2. action effect]
(1) as an example, it is compared to illustrate the action effect of present embodiment with the 1st embodiment.In the present embodiment, connect the situation etc. of different types of load in Secondary Winding 12,13 respectively, the balance of load is in unbalanced situation, it is also possible to suppress the variation of the output voltage from Secondary Winding 12,13.As long as it addition, have the transformator of a winding and plural Secondary Winding, then the structure of present embodiment can be applied.
First, the waveform of the output voltage of the Secondary Winding 12,13 when Fig. 6 is shown in the balance changing load in the structure of the 1st embodiment.Specifically, Fig. 6 is the electric current setting Secondary Winding 12 example that electric current is the output voltage waveforms (after rectification) when 0.1A as 0A, Secondary Winding 13.Width between the dotted line of Fig. 6 is the width between the maximum output voltage of Secondary Winding 12 and the minimum output voltage of Secondary Winding 13, it is known that this interval is approximately 4.25V.
On the other hand, in the present embodiment, having plural auxiliary winding 14,16, auxiliary winding 14,16 is disposed adjacent with Secondary Winding 12,13 respectively on the spool direction of a winding 11, and assists winding 14,16 to be connected in parallel with each other.Thus, it is in unbalanced situation in the balance of load, it is also possible to improve to intersect regulating.Such as, the output voltage waveforms (after rectification) of the Secondary Winding 12,13 when Fig. 7 illustrates the balance changing load, with the situation of Fig. 6 again it is setting the electric current of Secondary Winding 12 as the electric current of 0A, Secondary Winding 13 is example when 0.1A.As it is shown in fig. 7, the width of the single dotted broken line of the maximum output voltage of Secondary Winding 12,13 and minimum output voltage is approximately 2.25V, narrower than the width (about 4.25V) between the dotted line of Fig. 6, the variation of output voltage is less.Namely, it is known that the stability of output voltage improves, the adjustment that intersects is enhanced.
Based on the 1st embodiment, its reason is illustrated.First, in the 1st embodiment, when load becomes imbalance, the output voltage waveforms of the Secondary Winding of non-loaded side produces distortion.Fig. 8 illustrates such example.Fig. 8 is the voltage waveform of the Secondary Winding before rectification.Fig. 8 (a) is the electric current that sets and flow through Secondary Winding 12 as 0A (non-loaded), the electric current that flows through Secondary Winding 13 is output voltage waveforms when 0.1A, and Fig. 8 (b) makes that laod unbalance is contrary, sets the electric current that flows through Secondary Winding 12 as 0.1A, the electric current that flows through Secondary Winding 13 to be output voltage waveforms when 0A (non-loaded).So, the output voltage waveforms distortion of non-loaded side means that output voltage changes with the amount of this distortion.
It addition, when producing distortion in the output voltage waveforms of Secondary Winding, accompany with this, in the voltage waveform of the auxiliary winding 14 adjacent with this Secondary Winding, also produce distortion.Such as, the voltage waveform of the auxiliary winding 14 when relative to electric current respectively 0A, 0.1A flow through with auxiliary winding 14 Secondary Winding 12 farther out and the Secondary Winding 13 nearer with auxiliary winding 14 shown in Fig. 9 (a), the voltage waveform of the auxiliary winding 14 when flowing through electric current respectively 0.1A, the 0A with auxiliary winding 14 Secondary Winding 12 farther out and the Secondary Winding 13 nearer with auxiliary winding 14 shown in Fig. 9 (b) is in the interval of time 260～262 μ s, the shape of waveform is different, produces distortion in the waveform of Fig. 9 (b).Owing to auxiliary winding 14 is configured to Secondary Winding 12 farther out and relatively near with Secondary Winding 13, so, auxiliary winding 14 is respectively different with the coefficient of coup of each Secondary Winding 12,13.Therefore, the model of action for each Secondary Winding 12,13 via the magnetic field of auxiliary winding 14 is different, is difficult to improve intersect regulating.
On the other hand, in the present embodiment, two the auxiliary windings 14,16 being assemblied on magnetic core 10 are set, make these windings 14,16 be connected in parallel.Therefore, auxiliary winding 14,16 is electrically short-circuited to each other, and the voltage waveform of auxiliary winding 14,16 is identical.Such as, the voltage waveform of the auxiliary winding 14,16 that Figure 10 is the electric current setting Secondary Winding 12 when being 0.1A as the electric current of 0A, Secondary Winding 13, it is known that two waveforms are identical.Further, it is disposed adjacently auxiliary winding 16 by being disposed adjacently auxiliary winding 14 and Secondary Winding 12 respectively with Secondary Winding 13, from the action of a magnetic field of auxiliary winding 14,16 generation in adjacent Secondary Winding 12,13.
That is, when load becomes imbalance, the voltage waveform of a Secondary Winding 12,13 is normal, but, the voltage waveform of another Secondary Winding 12,13 produces distortion.Accompany with this, the voltage waveform also distortion of the auxiliary winding 14,16 of Secondary Winding 12,13 side of distortion.But, the voltage waveform of auxiliary winding 14,16 side of normal Secondary Winding 12,13 side is normal, owing to two are assisted winding 14,16 short circuit, so, the voltage waveform of the auxiliary winding 14,16 of Secondary Winding 12,13 side of distortion is also normal.The auxiliary winding 14,16 becoming this normal voltage waveform acts on the Secondary Winding 12,13 of the voltage waveform becoming distortion, becomes normal voltage waveform, and distortion alleviates.As such example, the voltage waveform of the Secondary Winding 12,13 before rectification shown in Figure 11.Figure 11 is the electric current setting Secondary Winding 12 as the electric current of 0A, Secondary Winding 13 is voltage waveform during 0.1A.As shown in the circular dashed line portion of Figure 11, the ledge (in figure about 21V) of the ledge (in figure about 20V) of the voltage waveform of Secondary Winding 12 Secondary Winding 12 than Fig. 8 (a) is low, it is known that distortion is enhanced.So, two voltage waveforms owing to improving into the Secondary Winding 12,13 before rectification are identical, regulate it is possible to reduce to intersect.
(2) in the present embodiment, Secondary Winding 12,13 is configured to than auxiliary winding 14,16 closer to a winding 11.Thereby, it is possible to increase the coefficient of coup of each 12,13 and winding 11 of Secondary Winding, it is possible to increase as the conversion efficiency of transformator.
[3. other embodiments]
This utility model is not limited to above-mentioned embodiment, also comprises following other shown embodiments.Further, appropriately combined by the multiple structural elements disclosed in above-mentioned embodiment and other embodiments following, it is possible to form various invention and/or utility model.Can implementation phase structural element deformed in without departing from the scope of its purport and embody.For example, it is possible to from the entire infrastructure key element shown in embodiment, several structural elements deleted, change, displacement etc..The following example illustrating other embodiments.Further, the switching power unit based on above-mentioned embodiment and the transformator of other embodiments following or its combination etc. is used to be also contained in scope of the present utility model.
(1) in the 1st and the 2nd embodiment, two Secondary Winding 12,13 are set, but more than three can also be arranged.When arranging odd number Secondary Winding, when such as arranging three, as shown in figure 12, arranging two Secondary Winding 12,13 with air gap 15 for reference symmetry, the 3rd Secondary Winding 17 overlaps in any one Secondary Winding 12,13 with stratiform.That is, change radius centered by spool direction and be arranged on the outside of any one Secondary Winding 12,13.But, make winding mutually insulated by resinous bobbin etc..
When arranging even number Secondary Winding, it is equidistantly positioned with air gap.When arranging more than four, for instance same with the situation arranging odd number, overlap with stratiform.So, in the multi output form of Secondary Winding of more than three is set, as it has been described above, by with air gap 15, for reference symmetry and to make the distance between a winding 11 be equidistant, it is possible to make inductance value and equal respectively with the coefficient of coup of winding 11 coupling.Therefore, when multi output, it is also possible to obtain suppressing output voltage values mutually well-behaved from switching power unit.
(2) in the 1st and the 2nd embodiment, in the way of insulating with a winding 11, auxiliary winding 14,16 and control circuit 22 are set, but, as shown in figure 13, it is also possible to auxiliary winding 14,16 and control circuit 22 are set in the way of being connected with a winding 11.When the control of switch element 21 is illustrated by the situation utilizing Figure 13, control circuit 22 has voltage monitor unit and the IC of the voltage after the voltage assisting winding 14 carries out the resistance of dividing potential drop, detection dividing potential drop.IC calculates the output voltage of Secondary Winding 12,13 according to the volume number ratio of the partial pressure value inputted, intrinsic standoff ratio and auxiliary winding 14 with Secondary Winding 12,13, generates control signal to become assigned voltage, and is output to switch element 21.
(3) in the 2nd embodiment, identical by the spool that makes each winding 11～13 and than Secondary Winding 12,13, plural auxiliary winding 14,16 is set in the way of a winding, but can also be contrary.That is, on the direction of each spool, it is also possible to an auxiliary winding 14,16 is respectively set in the both sides of a winding 11, and then in its arranged outside Secondary Winding 12,13.
(4) in the 1st and the 2nd embodiment, on the spool direction of a winding 11, auxiliary winding 14,16 is set on the same line in the way of not overlapping with Secondary Winding 12,13, but, the radius centered by spool direction can also be changed, be adjacent to be configured with stratiform with Secondary Winding 12,13.When one example is shown, it is possible to auxiliary winding 14 is set at the outside of Secondary Winding 13 winding, auxiliary winding 16 is set at the outside of Secondary Winding 12 winding.
(5) in the 2nd embodiment, auxiliary winding 14,16 is configured to equidistant with air gap 15, and is configured to symmetrical relative to air gap 15, but is not limited to this.That is, even if auxiliary winding 14,16 is configured to relative to air gap 15 non-equidistant and asymmetric, as long as Secondary Winding 12,13 can be acted on equably.Further, auxiliary winding 14,16 can also be arranged on spool direction, than Secondary Winding 12,13 closer to a winding 11.
(6) in the 2nd embodiment, two auxiliary windings 14,16 are set, but it is also possible to arrange more than three.Such as, when arranging the Secondary Winding of more than three, being adjacent to configuration auxiliary winding respectively with each Secondary Winding, each auxiliary winding is connected in parallel each other.
Claims (5)
1. a transformator, has:
Magnetic core；
Winding, it is assemblied on described magnetic core；
Air gap, it is arranged on the position being equipped with a described winding of described magnetic core；And
Plural Secondary Winding, they are assemblied on described magnetic core,
It is characterized in that, Secondary Winding more than said two is arranged on the both sides of a described winding on the spool direction of a described winding and is equidistant with described air gap.
2. transformator according to claim 1, it is characterised in that
Described transformator has the plural auxiliary winding being assemblied on described magnetic core,
Described auxiliary winding is disposed adjacent with described Secondary Winding respectively on the spool direction of a described winding, and described auxiliary winding is connected in parallel with each other.
3. transformator according to claim 1, it is characterised in that
Described transformator has the plural auxiliary winding being assemblied on described magnetic core,
Described Secondary Winding is configured to than described auxiliary winding closer to a described winding.
4. transformator according to claim 2, it is characterised in that
Described Secondary Winding is configured to than described auxiliary winding closer to a described winding.
5. a switching power unit, it is characterised in that this switching power unit has:
The transformator described in any one in Claims 1 to 4；
With the switch element that the one of described transformator time winding is connected；And
The control circuit that described switch element is controlled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015020729A JP6496563B2 (en) | 2015-02-04 | 2015-02-04 | Transformer and switching power supply |
| JP2015-020729 | 2015-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205377668U true CN205377668U (en) | 2016-07-06 |
Family
ID=56273429
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610045928.0A Active CN105846680B (en) | 2015-02-04 | 2016-01-22 | Transformer and switching power supply device |
| CN201620065625.0U Active CN205377668U (en) | 2015-02-04 | 2016-01-22 | Transformer and switching power supply device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610045928.0A Active CN105846680B (en) | 2015-02-04 | 2016-01-22 | Transformer and switching power supply device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6496563B2 (en) |
| CN (2) | CN105846680B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846680A (en) * | 2015-02-04 | 2016-08-10 | 株式会社田村制作所 | Transformer and power source switching device |
| CN109546862A (en) * | 2017-09-22 | 2019-03-29 | 冷王公司 | DC to the DC converter of variable DC link voltage is provided |
| CN112041949A (en) * | 2018-04-27 | 2020-12-04 | 西门子股份公司 | Inductor assembly |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3361822B2 (en) * | 1991-05-16 | 2003-01-07 | 株式会社東芝 | Inverter transformer |
| JPH0574638A (en) * | 1991-09-13 | 1993-03-26 | Toshiba Corp | High frequency heating apparatus |
| JPH06338424A (en) * | 1993-03-31 | 1994-12-06 | Yokogawa Electric Corp | Printed coil-type transformer |
| JPH0864439A (en) * | 1994-08-17 | 1996-03-08 | Sony Corp | Converter transformer |
| JPH09190889A (en) * | 1995-11-10 | 1997-07-22 | Sanyo Electric Works Ltd | Power unit for sign lamp |
| JPH11206124A (en) * | 1998-01-14 | 1999-07-30 | Matsushita Electric Ind Co Ltd | Switching power unit |
| JP2000124045A (en) * | 1998-07-14 | 2000-04-28 | Toko Inc | Inverter transformer and discharge lamp light-up circuit |
| JP2000353627A (en) * | 1999-06-10 | 2000-12-19 | Sony Corp | Insulating converter transformer and switching power supply circuit |
| JP2009182179A (en) * | 2008-01-31 | 2009-08-13 | Toko Inc | Inverter transformer |
| JP5031781B2 (en) * | 2009-01-30 | 2012-09-26 | 東光株式会社 | Inverter transformer |
| JP2010232390A (en) * | 2009-03-26 | 2010-10-14 | Panasonic Electric Works Co Ltd | Transformer |
| JP2011134744A (en) * | 2009-12-22 | 2011-07-07 | Takasago Seisakusho:Kk | Switching transformer and switching power source |
| SG183303A1 (en) * | 2010-03-25 | 2012-09-27 | Panasonic Corp | Transformer |
| JP5925150B2 (en) * | 2013-03-14 | 2016-05-25 | 三菱電機株式会社 | DC power supply |
| JP6496563B2 (en) * | 2015-02-04 | 2019-04-03 | 株式会社タムラ製作所 | Transformer and switching power supply |
-
2015
- 2015-02-04 JP JP2015020729A patent/JP6496563B2/en active Active
-
2016
- 2016-01-22 CN CN201610045928.0A patent/CN105846680B/en active Active
- 2016-01-22 CN CN201620065625.0U patent/CN205377668U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846680A (en) * | 2015-02-04 | 2016-08-10 | 株式会社田村制作所 | Transformer and power source switching device |
| CN105846680B (en) * | 2015-02-04 | 2020-04-03 | 株式会社田村制作所 | Transformer and switching power supply device |
| CN109546862A (en) * | 2017-09-22 | 2019-03-29 | 冷王公司 | DC to the DC converter of variable DC link voltage is provided |
| CN109546862B (en) * | 2017-09-22 | 2024-04-19 | 冷王有限责任公司 | DC-to-DC converter providing variable DC link voltage |
| CN112041949A (en) * | 2018-04-27 | 2020-12-04 | 西门子股份公司 | Inductor assembly |
| CN112041949B (en) * | 2018-04-27 | 2024-03-05 | 茵梦达有限责任公司 | Inductor assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6496563B2 (en) | 2019-04-03 |
| CN105846680B (en) | 2020-04-03 |
| CN105846680A (en) | 2016-08-10 |
| JP2016143844A (en) | 2016-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106104723B (en) | Transformer and the power inverter using the transformer | |
| CN205377668U (en) | Transformer and switching power supply device | |
| CN102130613B (en) | Power converter having a switch coupled between windings | |
| US9632564B2 (en) | Power supply device | |
| US20070069581A1 (en) | AC to DC converter circuit | |
| KR101487970B1 (en) | High-frequency wave type of x-ray generator | |
| CN1988071A (en) | Transformer with current sensing means | |
| US20220158562A1 (en) | Integrated inductor and a power conversion module including the integrated inductor | |
| CN205544940U (en) | Transformer and switching power supply device | |
| CN104184327A (en) | Power conversion apparatus and power conversion method | |
| CN105934875A (en) | Power conversion device | |
| KR20180039966A (en) | Electromagnetic inductive power supply apparatus | |
| JP2011254611A (en) | Half bridge type power converter | |
| CN205753994U (en) | Multiple-output electric power and electronic equipment | |
| US8964411B2 (en) | Method for DC-DC conversion using a DC electric power source | |
| EP3267444A1 (en) | Transformer and switched-mode power supply apparatus | |
| JP5887700B2 (en) | High frequency transformer | |
| CN103050261A (en) | High voltage regulating autotransformer | |
| CN106160485A (en) | Insulating power supply and output feedback method thereof | |
| US10249430B2 (en) | Transformer and switched-mode power supply apparatus | |
| US10262789B2 (en) | Transformer and switched-mode power supply apparatus | |
| EP3477840A1 (en) | Welding transformer | |
| EP3267445B1 (en) | Transformer and switched-mode power supply apparatus | |
| KR101229935B1 (en) | Variable inductance compensation device for cross segment power supply line | |
| JP6235418B2 (en) | Switching power transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |