CN206574579U - Flat surface transformer - Google Patents
Flat surface transformer Download PDFInfo
- Publication number
- CN206574579U CN206574579U CN201720101715.5U CN201720101715U CN206574579U CN 206574579 U CN206574579 U CN 206574579U CN 201720101715 U CN201720101715 U CN 201720101715U CN 206574579 U CN206574579 U CN 206574579U
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- CN
- China
- Prior art keywords
- flat surface
- magnetic core
- pars intermedia
- surface transformer
- magnetic cores
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Abstract
The utility model discloses flat surface transformer, it includes two magnetic cores, the primary magnet exciting coil between two magnetic cores, and the secondary busbar between two magnetic cores；Wherein, the pars intermedia of two magnetic cores is offseted, and gap is formed between the periphery of two magnetic cores, and the primary magnet exciting coil is arranged between the pars intermedia and the periphery of two magnetic cores；The secondary busbar and the primary magnet exciting coil are set between two magnetic cores mutually fastened, the pars intermedia of two magnetic cores offsets, gap is formed between the periphery of two magnetic cores, the flat surface transformer being thusly-formed is simple in construction, be easily installed making.
Description
Technical field
The utility model is related to field transformer, more particularly to a kind of flat surface transformer.
Background technology
Transformer (Transformer) is the device for changing alternating voltage using the principle of electromagnetic induction, main member
It is primary coil, secondary coil and iron core (magnetic core)；Major function has：Voltage transformation, current transformation, impedance are converted, isolated, surely
Press (magnetic saturation transformer) etc.；It can be divided into, according to use,：Power transformer and special transformer (electric furnace change, rectification change, power frequency examination
Test transformer, pressure regulator, mining change, audio-frequency transformer, intermediate-frequency transformer, high frequency transformer, impact transformer, instrument transformation
Device, electronic transformer, reactor, transformer etc.).
A kind of flat surface transformer being applied to applied to DC/DC DC down-converters is now provided.
Utility model content
Therefore, now providing a kind of flat surface transformer suitable for electric automobile.
Flat surface transformer of the present utility model, it includes two magnetic cores, the primary magnet exciting coil between two magnetic cores,
And the secondary busbar between two magnetic cores；Wherein, the pars intermedia of two magnetic cores offsets, two magnetic cores
Periphery between form gap, the primary magnet exciting coil is arranged on the pars intermedia of two magnetic cores and the periphery
Between portion.
The magnetic core includes pars intermedia, periphery and the groove between the pars intermedia and the periphery；Its
In, the thickness of the pars intermedia is more than the thickness of the periphery, and the groove is set to arc groove.
The magnetic core is rectangle, and the pars intermedia is elongated, the periphery include two individual characteies to setting "【" type
Portion；After two magnetic cores are fastened, two pars intermedias are offseted, and gap, the gap are formed between two peripheries
In be filled with epoxy black glue.
Two groove formation mounting grooves, the primary magnet exciting coil is placed in the mounting groove.
The colloid is set to black epoxy glue.
The secondary busbar is set to copper busbar.
The secondary busbar includes three legs, and the first leg and the second leg are located at the first side of the magnetic core and symmetrical
Set, the 3rd leg is located at the second side of the magnetic core；Wherein described first leg and second leg are parallel to the magnetic
Core is set, and the vertical magnetic core of the 3rd leg is set.
The first side of the magnetic core and the second side also form arc notch, and the primary magnet exciting coil connects
Line end is stretched out by the arc notch.
The secondary busbar also forms medial launder, and the pars intermedia of the magnetic core passes through the medial launder.
The primary magnet exciting coil use byMany enamel-covered wires be interwoven and appearance to be wound with poly- vinegar sub-
Amine film.
Above-mentioned technical proposal of the present utility model has advantages below compared with prior art：
In the utility model, the secondary busbar and the primary are set between two magnetic cores mutually fastened
Magnet exciting coil, the pars intermedia of two magnetic cores offsets, and forms gap between the periphery of two magnetic cores, such as
This formed the flat surface transformer it is simple in construction, be easily installed making.
Brief description of the drawings
In order that content of the present utility model is more likely to be clearly understood, below according to specific implementation of the present utility model
Example and with reference to accompanying drawing, the utility model is described in further detail, wherein
Fig. 1 is flat surface transformer schematic diagram described in the utility model；
Fig. 2 is magnetic core schematic diagram described in the utility model；
Fig. 3 is secondary busbar schematic diagram described in the utility model；
Fig. 4 is primary magnet exciting coil schematic diagram described in the utility model；
Fig. 5 is the circuit diagram of flat surface transformer described in the utility model；
Reference is expressed as in figure：1- magnetic cores；2- primary magnet exciting coils；3- level busbar；4- pars intermedias；5- peripheries
Portion；6- grooves；7- arc notch；8- medial launders.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein
Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.
As shown in Fig. 1,2,3,4 and 5, the flat surface transformer of the present embodiment, it includes two magnetic cores 1, located at two magnetic cores 1
Between primary magnet exciting coil 2, and the secondary busbar 3 between two magnetic cores 1；Wherein, two magnetic cores 1
Pars intermedia 4 is offseted, and gap is formed between the periphery 5 of two magnetic cores 1, and the primary magnet exciting coil 2 is arranged on two institutes
State between the pars intermedia 4 of magnetic core 1 and the periphery 5.
In the present embodiment, the secondary busbar 3 and the primary are set between two magnetic cores 1 mutually fastened
Magnet exciting coil 2, the pars intermedia 4 of two magnetic cores 1 offsets, between being formed between the periphery 5 of two magnetic cores 1
Gap, the flat surface transformer that is thusly-formed is simple in construction, be easily installed making.
As the preferred embodiment of the present embodiment, the secondary busbar 3 is set to copper busbar, i.e., described secondary busbar 3
For secondary copper bar；The working frequency of flat surface transformer described in the present embodiment is 200KHz, and secondary output current is 130A to the maximum；
Compared with conventional transformer, it is by the transformation being made up of two big FERRITE CORE and primary magnet exciting coil, secondary copper bar
Device；This topology layout eliminates the local hot spot problem in conventional transformer, it is allowed to worked under high frequency high current density.
Specifically, as shown in Fig. 2 the magnetic core 1 includes pars intermedia 4, periphery 5 and located at the pars intermedia 4 and institute
State the groove 6 between periphery 5；Wherein, the thickness of the pars intermedia 4 is more than the thickness of the periphery 5, and the groove 6 is set
For arc groove.In the present embodiment, because the thickness of the pars intermedia 4 is more than the thickness of the periphery 5, two institutes
State after the fastening of magnetic core 1, two pars intermedias 4 can offset, so that being formed with gap between two peripheries 5.
In the present embodiment, the magnetic core 1 is rectangle, and the pars intermedia 4 is elongated, and the periphery 5 includes two
Individual character to setting "【" type portion；After two magnetic cores 1 are fastened, two pars intermedias 4 offset, two peripheries 5 it
Between formed in gap, the gap be filled with epoxy black glue.
After two magnetic cores 1 are fastened, two formation of groove 6 mounting grooves, the primary magnet exciting coil 2, which is installed, to be put
Put in the mounting groove.
In the present embodiment, as preferred embodiment, the secondary busbar 3 is set to copper busbar；Specifically, it is described
Secondary busbar 3 includes three legs, and the first leg and the second leg are located at the first side of the magnetic core 1 and be symmetrical arranged, the 3rd
Leg is located at the second side of the magnetic core 1；Wherein described first leg and second leg are set parallel to the magnetic core 1,
The vertical magnetic core 1 of 3rd leg is set.In the prior art, formed more than secondary coil using with enamel-covered wire come coiling,
So transformer can be made highly to increase, it is difficult during making；And in the present embodiment, the secondary busbar is made using copper bar, its
Structure is very simple, is put into the magnetic core centre, the location footprint of the secondary busbar of the structure is fixed, uses screw
It is easily mounted onto on pcb board.
The first side and the second side of the magnetic core 1 also form arc notch 7, the primary magnet exciting coil 2
Terminals stretched out by the arc notch 7.
Further, the secondary busbar 3 also forms medial launder 8, and the pars intermedia 4 of the magnetic core 1 is described in
Medial launder 8.
In the present embodiment, the primary magnet exciting coil 2 using byMany enamel-covered wires be interwoven and outside
Table is wound with polyimide film；As preferred embodiment, the primary magnet exciting coil 2 is using 140 enamel-covered wire coilings
Form.
Flat surface transformer described in the present embodiment at least has following advantage：
(1) current density is high
Flat surface transformer has fabulous temperature characteristic design, and it can reach that very high electric current is close in the encapsulation volume of very little
Degree, due to its design feature, fully meets the working characteristics of high frequency electric, so being adapted to use in high-frequency occasion；
(2) high efficiency
Low drain inductance, was enabled it to switch time quickly, very low crossover loss, with regard to it can be made to reach very high effect
Rate.Because contact closely, just has the very high coefficient of coup between this transformer secondary winding and primary side winding, so
Its efficiency high, loss very little；
(3) heat dissipation characteristics are good
With the big component of very high table bulk area.This structure is conducive to radiating.Between primary and secondary side winding
Very little is lost in turn-to-turn, and the power attenuation of magnetic core is smaller, so it can accomplish high magnetic flux density.It can between -40C~130C work
Make；
(4) both sides magnetic core opens air gap
Air gap is opened in magnetic circuit to tilt to X axis equivalent to the hysteresis curve of magnetic core, under same magnetic induction intensity,
Bigger magnetizing current can be born, then stores more energy equivalent to magnetic core, this energy is when switching tube ends by becoming
Depressor secondary is released to load circuit.In reverse exciting topological Switching Power Supply, magnetic core opens air gap and is mainly two effects, and one is transmission
More multi-energy, two be to prevent magnetic core from entering saturation state；
In general, air gap can reduce magnetic conductivity, just change the slope of the hysteresis curve of magnetic core；So magnetic core aerating
Gap can reach following purpose：1st, inductance value is reduced；2nd, increase exciting curent；3rd, remanent magnetism can be reduced；4th, energy storage capacity is increased,
Diamagnetic saturability is significantly increased.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
1. flat surface transformer, it is characterised in that：It includes two magnetic cores (1), the primary excitation wire between two magnetic cores (1)
Enclose (2), and the secondary busbar (3) between two magnetic cores (1)；Wherein, the pars intermedia of two magnetic cores (1)
(4) offset, gap is formed between the periphery (5) of two magnetic cores (1), the primary magnet exciting coil (2) is arranged on two
Between the pars intermedia (4) and the periphery (5) of the magnetic core (1).
2. flat surface transformer according to claim 1, it is characterised in that：The magnetic core (1) includes pars intermedia (4), periphery
Portion (5) and the groove (6) between the pars intermedia (4) and the periphery (5)；Wherein, the pars intermedia (4)
Thickness is more than the thickness of the periphery (5), and the groove (6) is set to arc groove.
3. flat surface transformer according to claim 2, it is characterised in that：The magnetic core (1) is rectangle, the pars intermedia
(4) it is elongated, the periphery (5) include two individual characteies to setting "【" type portion；After two magnetic cores (1) fasten, two
The pars intermedia (4) offsets, and is formed between two peripheries (5) and epoxy black glue is filled with gap, the gap.
4. flat surface transformer according to claim 3, it is characterised in that：Two grooves (6) form mounting groove, described
Primary magnet exciting coil (2) is placed in the mounting groove.
5. flat surface transformer according to claim 3, it is characterised in that：The black glue is set to black epoxy glue.
6. flat surface transformer according to claim 1, it is characterised in that：The secondary busbar (3) is set to copper busbar.
7. flat surface transformer according to claim 6, it is characterised in that：The secondary busbar (3) includes three legs, the
One leg and the second leg are located at the first side of the magnetic core (1) and are symmetrical arranged, the 3rd leg located at the magnetic core (1) the
Two sides；Wherein described first leg and second leg are set parallel to the magnetic core (1), and the 3rd leg is vertically described
Magnetic core (1) is set.
8. flat surface transformer according to claim 7, it is characterised in that：The first side of the magnetic core (1) and described
Dual side-edge also forms arc notch (7), and the terminals of the primary magnet exciting coil (2) are stretched out by the arc notch (7).
9. flat surface transformer according to claim 7, it is characterised in that：The secondary busbar (3) also forms medial launder
(8), the pars intermedia (4) of the magnetic core (1) passes through the medial launder (8).
10. flat surface transformer according to claim 1, it is characterised in that：The primary magnet exciting coil (2) using byMany enamel-covered wires be interwoven and appearance is wound with polyimide film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101715.5U CN206574579U (en) | 2017-01-25 | 2017-01-25 | Flat surface transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101715.5U CN206574579U (en) | 2017-01-25 | 2017-01-25 | Flat surface transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206574579U true CN206574579U (en) | 2017-10-20 |
Family
ID=60061240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720101715.5U Expired - Fee Related CN206574579U (en) | 2017-01-25 | 2017-01-25 | Flat surface transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206574579U (en) |
-
2017
- 2017-01-25 CN CN201720101715.5U patent/CN206574579U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20190125 |