CN105846679A - Transformer and switch power supply device - Google Patents
Transformer and switch power supply device Download PDFInfo
- Publication number
- CN105846679A CN105846679A CN201610045872.9A CN201610045872A CN105846679A CN 105846679 A CN105846679 A CN 105846679A CN 201610045872 A CN201610045872 A CN 201610045872A CN 105846679 A CN105846679 A CN 105846679A
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- winding
- secondary winding
- transformator
- auxiliary
- magnetic core
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Classifications
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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
- 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
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- 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
Abstract
The invention provides a transformer and a switch power supply device. The transformer can also reduce cross regulation in the case that a load is unbalanced. The switch power supply device uses the transformer. The transformer (T) is provided with a magnetic core (10), a primary winding (11) assembled on the magnetic core (10), more than two secondary windings (12, 13) assembled on the magnetic core (10) in a manner that reels are the same as a reel of the primary winding (11), and more than two auxiliary windings (14, 16) assembled on the magnetic core (10) in a manner that reels are the same as the reel of the primary winding (11). The auxiliary windings (14, 16) are disposed in a manner that the auxiliary windings (14, 16) are respectively adjacent to the secondary windings (12, 13), and the auxiliary windings (14, 16) are mutually connected in parallel. The switch power supply device is provdied with the transformer (T), a switch element connected with the primary winding (11) of the transformer (T), and a control circuit controlling the switch element.
Description
Technical field
The present invention relates to transformator and use 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, need galvanic current pressure, in order to generate this DC voltage,
Used switching power unit in the past.The switching power unit voltage to supplying from external power source carries out rectification and smooths, logical
Cross thyristor carry out switch motion and be input to a winding of transformator, via based on smooth circuit flat
Slide and supply DC voltage from the Secondary Winding of transformator to load.Further, output voltage is monitored, by control
Circuit processed 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 removes
Have beyond magnetic core and winding being assemblied on this magnetic core, also there is plural Secondary Winding.
Patent documentation 1: Japanese Unexamined Patent Publication 05-049257 publication
In the case of the transformator being provided with plural Secondary Winding, when load becomes imbalance, sometimes produce
The raw intersection regulates.That is, when flowing through the curent change of the load being connected with a Secondary Winding, should be with load change
The output voltage of other unrelated Secondary Winding can change, and the situation that output voltage is unstable occurs.
Summary of the invention
The present invention completes to solve above-mentioned this problem, it is provided that load become unbalanced in the case of also can
Enough minimizing is intersected the transformator regulated and uses the switching power unit of this transformator.
(1) transformator of the present invention is characterised by, this transformator has: magnetic core；Winding, it is assemblied in
On described magnetic core；Plural Secondary Winding, it fills in the way of making spool identical with the spool of a described winding
Fit on described magnetic core；And plural auxiliary winding, it is so that spool is identical with the spool of a described winding
Mode be assemblied on described magnetic core, wherein, described auxiliary winding sets in the way of adjacent with described Secondary Winding respectively
Put, and described auxiliary winding is connected in parallel with each other.
Further, the transformator of the present invention can also have following structure.
(2) on the spool direction of a described winding, with the both sides of a described winding and than described auxiliary around
Group arranges described Secondary Winding closer to the mode of a described winding.
(3) on described magnetic core, the position being equipped with a described winding is provided with air gap, described once around
On the spool direction of group, to arrange described secondary in the both sides of a described winding and mode equidistant with described air gap
Winding.
The switching power unit of the present invention is characterised by, this switching power unit has: have the knot of above-mentioned (1)
The transformator of structure；The switch element being connected with a winding of described transformator；And described switch element is controlled
The control circuit of system.Further, this transformator can also be to have above-mentioned (2) or above-mentioned (2) and the structure of (3)
Transformator.
In accordance with the invention it is possible to obtain load become unbalanced in the case of also be able to reduce intersect regulation transformator
With the switching power unit using 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 song of the time change of the output voltage of each Secondary Winding illustrating the transformator from the 1st embodiment
Line chart.
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 is in the transformator illustrating the 1st embodiment, change load balance in the case of from each secondary around
The curve chart of the time change of the output voltage (after rectification) of group.
Fig. 7 is in the transformator illustrating the 2nd embodiment, change load balance in the case of from each secondary around
The curve chart of the time change of the output voltage (after rectification) of group.
Fig. 8 is the output voltage waveforms of the Secondary Winding before rectification, and Fig. 8 (a) is the electricity setting and flowing through Secondary Winding 12
Stream is 0A (non-loaded), flows through the situation that electric current is 0.1A of Secondary Winding 13, and Fig. 8 (b) is opposite to that
If the electric current flowing through Secondary Winding 12 is 0.1A, flows through the situation that electric current is 0A (non-loaded) of Secondary Winding 13.
Fig. 9 is the voltage time change illustrating the auxiliary winding changing the 1st embodiment in the case of load balance
Curve chart, Fig. 9 (a) is the electric current setting a Secondary Winding as the electric current of 0.1A, another Secondary Winding is 0A
Situation, Fig. 9 (b) is the opposite to that electric current setting a Secondary Winding as 0A, the electric current of another Secondary Winding
Situation for 0.1A.
Figure 10 is the curve chart of the voltage time change of each auxiliary 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 voltage waveform during 0.1A
(before rectification).
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
Help winding；15: air gap；21: switch element；22: control circuit；23,24: diode (rectification unit)；
25,26: capacitor (smooth unit)；T: transformator；Straight consistent with the spool of Secondary Winding of C: winding
Line.
Detailed description of the invention
Below, referring to the drawings the transformator of embodiments of the present invention and the switching power unit of this transformator of use are entered
Row explanation.First this transformator is illustrated, then the structure of the switching power unit using this transformator is carried out
Explanation.
[1. the 1st embodiment]
[1-1. structure]
Fig. 1 is the integrally-built schematic sectional view of the transformator illustrating present embodiment.Transformator T is to from external electrical
The voltage of source supply carries out transformation, and the circuit being connected with transformator T or external equipment even load are supplied electric power.Such as figure
Shown in 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 sets up the middle foot 10a being equipped with rectilinear form in the central portion separately.In this on foot 10a, so that
The spool of each winding 11～14 becomes the mode of same straight line C and is equipped with each winding 11～14.Dress at magnetic core 10
The position being furnished with a winding 11 is provided with air gap 15.That is, middle foot 10a is provided with air gap 15.It addition, two
Secondary winding 12,13 and auxiliary winding 14 are wound on middle foot 10a week in the way of polarity is contrary with a winding 11
Enclose, magnetic core 10, each winding 11～14 quilt by the not shown bobbin being made up of insulant such as resins respectively
Insulation.
One time winding 11 is connected with external power source, to Secondary Winding 12,13, auxiliary winding 14 feeds.Two
It is connected with external circuit or external equipment even load between two terminals of secondary winding 12,13, makes to be subject to from a winding 11
The electric power of electricity is connected with these circuit or load.Secondary Winding 12,13 such as be used for making IGBT or MOS etc. enter
The buffer circuit that action is made connects.
On the spool direction of a winding 11, Secondary Winding 12,13 is arranged on the both sides of a winding 11.Change
Yan Zhi, it is adjacent with a winding 11 that each Secondary Winding 12,13 is arranged to both of which.Preferably at a winding 11
On spool direction, to be configured with an equidistant mode of winding 11.Further, at the spool of a winding 11
On direction, each Secondary Winding 12,13 is configured in mode equidistant with air gap 15.
In the present embodiment, on the spool direction of a winding 11,12,13 and winding of Secondary Winding etc.
Distance, and equidistant with air gap 15.That is, Secondary Winding 12,13 be arranged to centered by a winding 11 symmetrical,
And it is symmetrical centered by air gap 15.
Auxiliary winding 14 is connected with the aftermentioned control circuit being controlled switch element.Auxiliary winding 14 from once around
Group 11 is by electricity, the driving power voltage of supply control circuit.Auxiliary winding 14 is in the way of making spool direction identical
It is arranged on the side of Secondary Winding 13, 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 switch electricity using this transformator T
The circuit diagram of source apparatus.Owing to Secondary Winding 12, the l3 of transformator T arrange multiple (being two here), so,
The switching power unit of present embodiment is the supply unit of multi output.This switching power unit e.g. flybacks mode
Switching Power Supply, is used for making quasiconductor carry out switch process.
Specifically, this switching power unit has transformator T, switch element 21, controls switch element 21
The control circuit 22 of system, 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, to supply from external power source
Voltage carries out rectification and smooths.
Switch element 21 is the thyristors such as FET.Winding 11 of switch element 21 and transformator T
Connect, the input voltage for a winding 11 is controlled.Control circuit 22 is configured to comprise IC, and sets
Put auxiliary winding 14 and switch element 21 at outlet side to connect, accept power supply voltage supplying from auxiliary winding 14,
Control the time rate of 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 is configured to include the voltage monitor unit of the voltage of detection auxiliary winding 14, to coming
The smooth unit such as the capacitor that smooths are carried out, by light-emitting component and photo detector structure from the output voltage of auxiliary winding 14
The photo-coupler become and IC.In the case of Gai, it is shown that during an example of the control that control circuit 22 is carried out, first,
Via smooth unit, the output voltage values from auxiliary winding 14 that voltage monitor unit detects is imported into IC.
IC is according to this magnitude of voltage and assists winding 14 to calculate Secondary Winding 12,13 with the volume number ratio of Secondary Winding 12,13
Output voltage, generate the control signal of output voltage stabilization for making Secondary Winding 12,13 according to this voltage.
Then, this control signal is exported the light-emitting component of the photo-coupler being connected with IC by IC.Light-emitting component will be inputted
Control signal be converted to optical signal, this optical signal is exported 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 to Secondary Winding 12,13
And between capacitor 25,26, the output voltage from Secondary Winding 12,13 is carried out rectification.Further, by electricity
Voltage after 25,26 pairs of rectifications of container smooths, and generates DC voltage.
[1-2. action effect]
(1) the transformator T of present embodiment has magnetic core 10, is assemblied in magnetic core 10 in the way of making each spool identical
On a winding 11 and plural Secondary Winding 12,13, on magnetic core 10, be equipped with a winding
The position of 11 is provided with air gap 15, to arrange in the both sides in the direction of spool C and mode equidistant with air gap 15
Secondary Winding 12,13.Thus, reduce the inductance of each Secondary Winding 12,13 difference and with winding 11 coupling
The difference of the coefficient of coup closed, as shown in Figure 3, it is possible to suppress the output voltage from each Secondary Winding 12,13 surely
Timing occur well-behaved from.
It is compared to illustrate the effect of present embodiment in further detail with prior art.In the setting shown in Figure 14
Secondary Winding 112,113 in the both sides of a winding 111 is relative to the existing transformation that air gap 115 is non-equidistant
In the case of device, when enumerating an example, when the rank (order) that the inductance value in Secondary Winding 112,113 is tens of μ H
In the case of when the rank difference of individual position, as shown in figure 15, the output voltage from Secondary Winding 112,113 is sent out
Raw 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, on the other hand, and the inductance of the Secondary Winding 12,13 of the transformator T of present embodiment
Value can be 10-1Position is equal, and the consistent aspect in inductance value exists the difference of two.
Further, as shown in figure 16, at the configuration position of each Secondary Winding 112,113 with the distance of air gap 115 it is
In the case of the existing transformator that distance is different from the distance of a winding 111, when in Secondary Winding 112,113
The rank that inductance value is tens of μ H in the case of 10-1Position rank difference time, as shown in figure 17, from two
The output voltage of secondary winding 112,113 occur well-behaved from.But although this be due to two inductance value roughly equal with
The coupling of winding 111 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.Another
Aspect, the inductance value of the Secondary Winding 12,13 of the transformator T of present embodiment can be 10-1Position is equal, at electricity
There is the difference of one in the consistent aspect of inductance value.Further, the transformator T of present embodiment with winding 11 coupling
The coefficient of coup closed is 10-2Rank equal, there is the difference of one in the consistent aspect at the coefficient of coup.
As it has been described above, according to present embodiment, due to can reduce the inductance of each Secondary Winding 12,13 difference and
The difference of the coefficient of coup coupled with winding 11, so, obtain suppressing exponentially from each Secondary Winding 12,
The output voltage of 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 real with the 1st
Execute mode identical.Thus, only the difference with the 1st embodiment is illustrated, to the 1st embodiment phase
With part mark identical label detailed.
Fig. 4 is the integrally-built schematic sectional view of the transformator illustrating the 2nd embodiment.Fig. 5 is to use the 2nd
The circuit diagram of the switching power unit of the transformator T of embodiment.It is to arrange with the difference of the 1st embodiment
The auxiliary winding 14,16 of two or more (being two here).
That is, difference is, on the spool direction of each winding 11～13, auxiliary winding 14,16 with secondary
The adjacent mode of winding 12,13 is respectively provided with, and assists winding 14,16 to be connected in parallel with each other.This embodiment party
In formula, 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 arranged to than auxiliary winding 14,16 closer to once
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.At this
In embodiment, Secondary Winding 12,13 connects the situation etc. of different types of load, the balance of load respectively
In the case of unbalanced, it is also possible to suppress the variation of the output voltage from Secondary Winding 12,13.It addition, only
If having a winding and the transformator of plural Secondary Winding, then can apply the structure of present embodiment.
Secondary Winding 12 when first, Fig. 6 changes the balance of load in being shown in the structure of the 1st embodiment,
The waveform of the output voltage of 13.Specifically, Fig. 6 is the electric current setting Secondary Winding 12 as 0A, Secondary Winding 13
The example that electric current is the output voltage waveforms (after rectification) in the case of 0.1A.Width between the dotted line of Fig. 6
It 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 should
Interval is about 4.25V.
On the other hand, in the present embodiment, a winding 11 there is magnetic core 10, being assemblied on magnetic core 10, with
Plural Secondary Winding 12 that the mode making the spool of spool and a winding 11 identical is assemblied on magnetic core 10,
13, the plural auxiliary being assemblied on magnetic core 10 in the way of the spool that makes spool and a winding 11 is identical around
Group 14,16, auxiliary winding 14,16 is respectively provided with in the way of adjacent with Secondary Winding 12,13, and assists
Winding 14,16 is connected in parallel with each other.Thus, in the case of the balance in load is unbalanced, it is also possible to improve and hand over
The problem of fork regulation.Such as, the output voltage of the Secondary Winding 12,13 when Fig. 7 illustrates the balance changing load
Waveform (after rectification), with the situation of Fig. 6 again it is set the electric current of Secondary Winding 12 as 0A, Secondary Winding 13
Electric current is the example in the case of 0.1A.As it is shown in fig. 7, the maximum output voltage of Secondary Winding 12,13 is with minimum
The width of the single dotted broken line of output voltage is about 2.25V, than the width (about 4.25V) between the dotted line of Fig. 6
Narrow, the variation of output voltage is less.I.e., it is known that the stability of output voltage improves, the regulation that intersects is enhanced.
Based on the 1st embodiment, its reason is illustrated.First, in the 1st embodiment, when load becomes not
During balance, 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), to flow through the electric current of Secondary Winding 13 be the output voltage waveforms in the case of 0.1A, Fig. 8 (b) is
Make that laod unbalance is contrary, set the electric current flowing through Secondary Winding 12 as 0.1A, the electric current that flows through Secondary Winding 13 be
Output voltage waveforms in the case of 0A (non-loaded).So, the output voltage waveforms distortion meaning of non-loaded side
Output voltage to change with the amount of this distortion.
It addition, when in the output voltage waveforms of Secondary Winding produce distortion time, accompany with this, with this Secondary Winding
The voltage waveform of adjacent auxiliary winding 14 also produces distortion.Such as, relative to shown in Fig. 9 (a) flow through with
The electric current of auxiliary winding 14 Secondary Winding 12 farther out and the Secondary Winding 13 nearer with auxiliary winding 14 is respectively
The voltage waveform of the auxiliary winding 14 in the case of 0A, 0.1A, flowing through and auxiliary winding 14 shown in Fig. 9 (b)
Secondary Winding 12 and the electric current of the Secondary Winding 13 nearer with auxiliary winding 14 farther out are respectively 0.1A, 0A
In the case of the voltage waveform of auxiliary winding 14 in the interval of time 260～262 μ s, the shape of waveform is different,
The waveform of Fig. 9 (b) produces distortion.Owing to auxiliary winding 14 is configured to Secondary Winding 12 farther out and with two
Secondary winding 13 is relatively near, so, auxiliary winding 14 is respectively different with the coefficient of coup of each Secondary Winding 12,13.Cause
This, the model of action for each Secondary Winding 12,13 via the magnetic field of auxiliary winding 14 is different, is difficult to improve and hands over
Fork regulation.
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 are connected in parallel.Therefore, auxiliary winding 14,16 is electrically short-circuited to each other, auxiliary winding 14,16
Voltage waveform is identical.Such as, to be the electric current setting Secondary Winding 12 as the electric current of 0A, Secondary Winding 13 be Figure 10
The voltage waveform of the auxiliary winding 14,16 during 0.1A, it is known that two waveforms are identical.Further, by respectively with secondary
Winding 13 be disposed adjacently auxiliary winding 14 and Secondary Winding 12 be disposed adjacently auxiliary winding 16, from auxiliary around
The action of a magnetic field of group 14,16 generation is in adjacent Secondary Winding 12,13.
That is, when load becomes imbalance, the voltage waveform of a Secondary Winding 12,13 is normal, but, separately
The voltage waveform of one Secondary Winding 12,13 produces distortion.Accompany with this, the Secondary Winding 12,13 of distortion
The voltage waveform also distortion of the auxiliary winding 14,16 of side.But, the auxiliary of normal Secondary Winding 12,13 side around
The voltage waveform of group 14,16 sides is normal, due to two auxiliary windings 14,16 short circuits, so, the secondary of distortion around
The voltage waveform of the auxiliary winding 14,16 of group 12,13 sides is the most normal.Become the auxiliary of this normal voltage waveform around
Group 14,16 acts on the Secondary Winding 12,13 of the voltage waveform becoming distortion, becomes normal voltage waveform, loses
Proper subtraction is light.As such example, the voltage waveform of Secondary Winding 12,13 before rectification shown in Figure 11.Figure
11 be the electric current setting Secondary Winding 12 as the electric current of 0A, Secondary Winding 13 is voltage waveform during 0.1A.Such as figure
Shown in the circular dashed line portion of 11, the ledge (about 20V in figure) of the voltage waveform of Secondary Winding 12 compares Fig. 8
A the ledge (about 21V in figure) of the Secondary Winding 12 of () is low, it is known that distortion is enhanced.So, due to
Two voltage waveforms improving into the Secondary Winding before rectification 12,13 are identical, regulate it is possible to reduce to intersect.
(2) in the present embodiment, on the direction of spool, with in the both sides of a winding 11 and than auxiliary winding
14,16 Secondary Winding 12,13 is set closer to the mode of a winding 11.Thereby, it is possible to increase each Secondary Winding
12,13 and the coefficient of coup of a winding 11, it is possible to increase as the conversion efficiency of transformator.
[3. other embodiments]
The invention is not restricted to above-mentioned embodiment, also comprise following other shown embodiments.Further, by above-mentioned
Multiple structural elements disclosed in embodiment and other embodiments following appropriately combined, it is possible to form various
Bright.Can implementation phase without departing from the range of its purport, structural element being deformed and embodying.Such as,
From the entire infrastructure key element shown in embodiment, several structural elements can be deleted, change, displacement etc..
The following example illustrating other embodiments.Further, use based on above-mentioned embodiment and other embodiments following or
The switching power unit of the transformator of a combination thereof etc. is also contained in the scope of the present invention.
(1) in the 1st and the 2nd embodiment, two Secondary Winding 12,13 are set, but three can also be arranged
More than individual.In the case of odd number Secondary Winding is set, such as arrange three in the case of, as shown in figure 12,
Being symmetrical arranged two Secondary Winding 12,13 on the basis of air gap 15, the 3rd Secondary Winding 17 sets with stratiform overlap
Put in any one Secondary Winding 12,13.That is, change the radius centered by spool direction and be arranged on arbitrarily
The outside of one Secondary Winding 12,13.But, make winding mutually insulated by resinous bobbin etc..
In the case of even number Secondary Winding is set, it is equidistantly positioned with air gap.In the case of arranging more than four,
Such as the situation that odd number is set, overlap with stratiform.So, in the Secondary Winding arranging more than three
Multi output form in, as it has been described above, by symmetrical on the basis of air gap 15 and make between a winding 11
Distance be equidistant, it is possible to make inductance value and the most equal with the coefficient of coup of winding 11 coupling.Therefore,
In the case of multi output, it is also possible to obtain suppressing output voltage values the most well-behaved from switching power unit.
(2) in the 1st and the 2nd embodiment, by with the insulation of winding 11 in the way of arrange auxiliary winding 14,
16 and control circuit 22, but, as shown in figure 13, it is also possible to arrange auxiliary in the way of being connected with a winding 11
Help winding 14,16 and control circuit 22.When the control of switch element 21 is illustrated by the situation utilizing Figure 13,
Control circuit 22 has the voltage of the voltage after the voltage to auxiliary winding 14 carries out the resistance of dividing potential drop, detection dividing potential drop and supervises
Monitor unit and IC.IC is according to the partial pressure value inputted, intrinsic standoff ratio and auxiliary winding 14 and Secondary Winding
12, the volume number ratio of 13 calculates the output voltage of Secondary Winding 12,13, generates control signal to become regulation
Voltage, and it is output to switch element 21.
(3) in the 2nd embodiment so that the spool of each winding 11～13 is identical and than Secondary Winding 12,
13 arrange two auxiliary windings 14,16 further from the mode of a winding, but may be reversed.That is, at each volume
On the direction of axle, it is also possible to an auxiliary winding 14,16 is respectively set in the both sides of a winding 11, and then outside it
Side arranges Secondary Winding 12,13.
(4) in the 1st and the 2nd embodiment, on the spool direction of a winding 11, with not with Secondary Winding
12,13 modes overlapped arrange auxiliary winding 14,16 on the same line, but it is also possible to change with spool side
Radius centered by, is adjacent to be configured with stratiform with Secondary Winding 12,13.When one example is shown, Ke Yi
The outside winding of Secondary Winding 13 arranges auxiliary winding 14, and in the outside of Secondary Winding 12, winding arranges auxiliary winding
16。
(5) in the 2nd embodiment, auxiliary winding 14,16 is arranged to equidistant with air gap 15, and arranges
Become symmetrical relative to air gap 15, but be not limited to this.That is, even if auxiliary winding 14,16 is disposed relative to air gap
15 non-equidistant and asymmetric, as long as Secondary Winding 12,13 can be acted on equably.Further, auxiliary around
Group 14,16 can also be arranged on spool direction, than Secondary Winding 12,13 closer to a winding 11.
(6) in the 2nd embodiment, arrange two auxiliary windings 14,16, but it is also possible to arrange three with
On.Such as, in the case of the Secondary Winding of more than three is set, it is adjacent to configuration auxiliary respectively with each Secondary Winding
Winding, each auxiliary winding is connected in parallel each other.
Claims (4)
1. a transformator, it is characterised in that this transformator has:
Magnetic core；
Winding, it is assemblied on described magnetic core；
Plural Secondary Winding, it is assemblied in described in the way of making spool identical with the spool of a described winding
On magnetic core；And
Plural auxiliary winding, it is assemblied in described in the way of making spool identical with the spool of a described winding
On magnetic core,
Wherein, described auxiliary winding is respectively provided with in the way of adjacent with described Secondary Winding, and described auxiliary winding
It is connected in parallel with each other.
Transformator the most according to claim 1, it is characterised in that
On the spool direction of a described winding, in the both sides of a described winding and more to lean on than described auxiliary winding
The mode of the most described winding arranges described Secondary Winding.
Transformator the most according to claim 1 and 2, it is characterised in that
On described magnetic core, the position being equipped with a described winding is provided with air gap,
On the spool direction of a described winding, with in the both sides of a described winding and equidistant with described air gap
Mode arranges described Secondary Winding.
4. a switching power unit, it is characterised in that this switching power unit has:
The transformator described in any one in claims 1 to 3；
The switch element being connected with a winding of described transformator；And
The control circuit that described switch element is controlled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015020730A JP6165791B2 (en) | 2015-02-04 | 2015-02-04 | Transformer and switching power supply |
| JP2015-020730 | 2015-02-04 |
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| Publication Number | Publication Date |
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| CN105846679A true CN105846679A (en) | 2016-08-10 |
| CN105846679B CN105846679B (en) | 2020-04-03 |
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| CN201620065294.0U Active CN205544940U (en) | 2015-02-04 | 2016-01-22 | Transformer and switching power supply device |
| CN201610045872.9A Active CN105846679B (en) | 2015-02-04 | 2016-01-22 | Transformer and switching power supply device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620065294.0U Active CN205544940U (en) | 2015-02-04 | 2016-01-22 | Transformer and switching power supply device |
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| JP (1) | JP6165791B2 (en) |
| CN (2) | CN205544940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320892A (en) * | 2018-03-02 | 2018-07-24 | 深圳创维－Rgb电子有限公司 | A kind of transformer and Switching Power Supply |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6165791B2 (en) * | 2015-02-04 | 2017-07-19 | 株式会社タムラ製作所 | Transformer and switching power supply |
| KR102075417B1 (en) * | 2020-01-16 | 2020-02-10 | 주식회사 케이피일렉트릭 | A main transformer for electric traction vehicle |
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| JP2000223324A (en) * | 1999-01-29 | 2000-08-11 | Matsushita Electric Ind Co Ltd | Converter transformer and electronic equipment using the same |
| 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 |
| CN205544940U (en) * | 2015-02-04 | 2016-08-31 | 株式会社田村制作所 | Transformer and switching power supply device |
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| JP3130200B2 (en) * | 1994-04-12 | 2001-01-31 | 松下電器産業株式会社 | Trance |
| JP3543029B2 (en) * | 1995-05-29 | 2004-07-14 | 松下電器産業株式会社 | Converter transformer |
| JP2974967B2 (en) * | 1996-04-27 | 1999-11-10 | ティーディーケイ株式会社 | Converter transformer |
| US20120119676A1 (en) * | 2010-11-15 | 2012-05-17 | Power Integrations, Inc. | Flyback power converter with divided energy transfer element |
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2015
- 2015-02-04 JP JP2015020730A patent/JP6165791B2/en active Active
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- 2016-01-22 CN CN201620065294.0U patent/CN205544940U/en active Active
- 2016-01-22 CN CN201610045872.9A patent/CN105846679B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000223324A (en) * | 1999-01-29 | 2000-08-11 | Matsushita Electric Ind Co Ltd | Converter transformer and electronic equipment using the same |
| 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 |
| CN205544940U (en) * | 2015-02-04 | 2016-08-31 | 株式会社田村制作所 | Transformer and switching power supply device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320892A (en) * | 2018-03-02 | 2018-07-24 | 深圳创维－Rgb电子有限公司 | A kind of transformer and Switching Power Supply |
| CN108320892B (en) * | 2018-03-02 | 2020-09-08 | 深圳创维－Rgb电子有限公司 | Transformer and switching power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105846679B (en) | 2020-04-03 |
| CN205544940U (en) | 2016-08-31 |
| JP2016144375A (en) | 2016-08-08 |
| JP6165791B2 (en) | 2017-07-19 |
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