CN109494053A - A kind of transformer of New-energy electric vehicle high-power charger - Google Patents
A kind of transformer of New-energy electric vehicle high-power charger Download PDFInfo
- Publication number
- CN109494053A CN109494053A CN201811300001.2A CN201811300001A CN109494053A CN 109494053 A CN109494053 A CN 109494053A CN 201811300001 A CN201811300001 A CN 201811300001A CN 109494053 A CN109494053 A CN 109494053A
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- CN
- China
- Prior art keywords
- mounting blocks
- transformer
- electric vehicle
- new
- magnetic core
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- 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.)
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Classifications
-
- 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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- 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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
Abstract
The present invention relates to the DC-DC converter technical fields of charger, especially a kind of transformer of New-energy electric vehicle high-power charger, magnetic core including skeleton and with skeleton cooperation, the magnetic core is provided with two pairs on skeleton, two pairs of magnetic cores are fitted on skeleton side by side, the skeleton includes upper mounting blocks and lower mounting blocks, support is provided with hollow square tube body between the upper mounting blocks and lower mounting blocks, the upper mounting blocks are provided with lower mounting blocks and are connected to the intracorporal through slot of square tube, the magnetic core corresponds respectively to mounting blocks and lower mounting blocks are fed through corresponding through slot and are placed on cooperation in square tube body, the configuration of the present invention is simple, manufacturing cost is low, magnetic flux is big, charger output power and stabilization.
Description
Technical field
The present invention relates to the DC-DC converter technical field of charger, specific field is that a kind of New-energy electric vehicle is big
The transformer of power charger.
Background technique
Charger provides stable power output for electronic equipment, its performance quality directly determines the matter of electronic product
Amount, and charger performance and design of transformer superiority and inferiority are closely related.It can be said that transformer is made in charger in occupation of key
With decide the key technical index and working condition of circuit, therefore for most of chargers, the design of charger is returned
Root knot bottom is the design of transformer.
Transformer plays voltage transformation function in circuit, also has both and is dielectrically separated from and power transmitting function.Charger
Transformer and switching tube constitute the blocking oscillator of an auto-excitation type together, so that input direct-current voltage is modulated into a high frequency
Pulse voltage.Transformer plays the role of energy transfer and conversion, the DC voltage of input can be converted into required various low
Pressure.
The size of transformer transimission power in charger, material and cross-sectional area depending on iron core.So-called cross section
Product, whether E type shell type structure or E type core type structure (including c-type structure), each mean that section of stem that winding is wrapped up
Cross sectional area.
Transformer is set to export bigger power, in the case where voltage is certain, circle number will lack as far as possible, and conducting wire to the greatest extent may be used
Can it is thick.It is conducive to provide biggish electric current in this way, exports bigger power.The former needs biggish core cross section product, the latter
It is required that biggish magnetic core window area.Therefore to obtain biggish output power magnetic core size must enough greatly.
The circle number of primary winding can be used following formula to calculate:
N=k*10^5*U/ (f*Ae*B max)
Wherein, k is maximum the ratio between turn-on time and period, usually takes k=0.4；
U is armature winding input voltage (V), (being approximately equal to DC input voitage)；
F is the working frequency (KHZ) of transformer；
Ae is the sectional area (cm of magnetic core2)；
Bmax is allowed magnetic flux density maximum changing amplitude (G).
Therefore, under certain voltage, increasing section accumulates Ae, improves working frequency and selects bigger peak flux density
Bmax advantageously reduces circle number, improves output power.But the loss of magnetic core (iron loss) is 2.7 power and f by Bmax
What 1.7 power were exponentially increased, Bmax is also limited by core saturation.Therefore, it improves working frequency f and selects bigger peak value
Magnetic flux density Bmax is limited.Most of FERRITE CORE frequencies for being suitble to do Switching Power Supply are typically limited to 10-
Within 50KHZ, Bmax is limited within 2000G (Gauss), generally takes Bmax=1600G more appropriate.Therefore, power mainly by
Core cross section accumulates Ae, secondly by working frequency f control.Ae is increased and f is improved allow it is merely meant that same voltage around circle
Number is less to improve power.
The window area of magnetic core of transformer refers to that a part of area for accommodating coil.Sectional area refers to magnetic core of transformer by coil
That a part of area of package.Transformer turn is generally exactly to be calculated according to sectional area and permeameter.Window area is not
With calculating, obtained by measurement.Sectional area is magnetic core width × core thickness.
Traditional transformer is designed using a secondary magnetic core and general skeleton, that there are core section products is small for this mode,
The low disadvantage of the charger power of design.And traditional transformer, using a secondary magnetic core, loss leads to greatly charger output power
It is unstable.
Summary of the invention
It is existing to solve the purpose of the present invention is to provide a kind of transformer of New-energy electric vehicle high-power charger
The problem that the charger power designed in technology is low, loss causes charger output power unstable greatly.
To achieve the above object, the invention provides the following technical scheme: a kind of New-energy electric vehicle high-power charger
Transformer, the magnetic core including skeleton and with skeleton cooperation, the magnetic core is provided with two pairs on skeleton, two pairs of magnetic cores and deployings
Conjunction is mounted on skeleton, and the skeleton includes upper mounting blocks and lower mounting blocks, is supported between the upper mounting blocks and lower mounting blocks
It is provided with hollow square tube body, the upper mounting blocks are provided with lower mounting blocks and are connected to the intracorporal through slot of square tube, the magnetic core
It corresponds respectively to mounting blocks and lower mounting blocks is fed through corresponding through slot and is placed on cooperation in square tube body.
Preferably, the magnetic core is EE42A magnetic core.
Preferably, the two sides of the upper mounting blocks and the two sides of lower mounting blocks are provided with baffle, magnetic core described in two pairs
It is arranged between baffle.
Preferably, limited block is evenly arranged on the both ends that the upper mounting blocks correspond at baffle.
Preferably, multiple U-lags are evenly arranged on the limited block.
Preferably, it is located on the limited block on the block between two U-lags and is provided with positioning protrusion.
Preferably, mounting base is provided at 4 angles of the lower mounting blocks.
Preferably, fixing threaded hole is provided in the mounting base.
Preferably, be provided with deep floor at two end-stopping plates of the lower installation board, by deep floor improve baffle with
Bonding strength between lower installation board, and deep floor is between corresponding two mounting bases.
Preferably, the section of the hollow square tube body is respectively less than the surface of upper mounting plate and lower installation board.
Compared with prior art, the beneficial effects of the present invention are: mainly being innovated to skeleton and magnetic core usage mode,
When efficiently solving the problems, such as using traditional transformer core section product it is small, at high cost and caused by charger power it is low；
Selection makes transformer with two secondary magnetic cores, mainly uses the magnetic core of EE42A, can increase core cross section product,
Cost is reduced, charger output power is increased；
Skeleton plays the role of support and isolation in transformer, mainly between primary and secondary coil and magnetic core carry out every
From cooperatively forming output power, stable transformer by skeleton and magnetic core；
This kind of skeleton is not provided with pin, and pin is replaced by the tap of primary and secondary coil, and such transformer is in charger
Position can be more flexible.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is skeleton schematic diagram one of the invention；
Fig. 3 is skeleton schematic diagram two of the invention；
Fig. 4 is magnetic main view of the invention.
In figure: 1, magnetic core；2, upper mounting blocks；3, lower mounting blocks；4, square tube body；5, through slot；6, baffle；7, limited block；8,U
Shape slot；9, positioning protrusion；10, mounting base；11, fixing threaded hole；12, deep floor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 to 4 is please referred to, the present invention provides a kind of technical solution: a kind of New-energy electric vehicle high-power charger
Transformer, the magnetic core 1 including skeleton and with skeleton cooperation, the magnetic core 1 are provided with two pairs on skeleton, and two pairs of magnetic cores 1 are side by side
It is fitted on skeleton, the skeleton includes upper mounting blocks and lower mounting blocks, is propped up between the upper mounting blocks and lower mounting blocks
Support is provided with hollow square tube body 4, and the upper mounting blocks are provided with the through slot 5 being connected in square tube body 4 with lower mounting blocks, described
Magnetic core 1 corresponds respectively to mounting blocks and lower mounting blocks are fed through corresponding through slot 5 and are placed on cooperation in square tube body 4.
The magnetic core 1 is EE42A magnetic core 1.
The two sides of the upper mounting blocks and the two sides of lower mounting blocks are provided with baffle 6, and magnetic core 1 described in two pairs is respectively provided with
Between baffle 6.
Limited block 7 is evenly arranged on the both ends that the upper mounting blocks correspond at baffle 6.
Multiple U-lags 8 are evenly arranged on the limited block 7.
It is located on the block between two U-lags 8 on the limited block 7 and is provided with positioning protrusion 9.
Mounting base 10 is provided at 4 angles of the lower mounting blocks.
Fixing threaded hole 11 is provided in the mounting base 10.
Be provided with deep floor 12 at two end-stopping plates 6 of the lower installation board 3, by deep floor 12 improve baffle 6 with
Bonding strength between lower installation board 3, and deep floor 12 is between corresponding two mounting bases 10.
The section of the hollow square tube body 4 is respectively less than the surface of upper mounting plate 2 and lower installation board 3, so that hollow square tube
Body 4 is in I-shaped setting when supporting upper mounting plate 2 and lower installation board 3, and when magnetism is mounted on skeleton, coil is wound around magnetic core
On 1 two sides, coil can be intracavitary in the I-shaped two sides of skeleton.
By the technical program, selection makes transformer with two secondary magnetic cores 1, mainly uses the magnetic core 1 of EE42A, can
To increase 1 sectional area of magnetic core, cost is reduced, increases charger power, according to core dimensions required for the power of high frequency transformer
The skeleton with size is designed, suitable skeleton is gone out by 1 parameter designing of magnetic core chosen, length is determined by the width of two secondary magnetic cores 1
Fixed, width is determined by the length of magnetic core 1, is highly determined by the height of magnetic core 1；
Its window area and sectional area can be calculated by the combination of magnetic core 1, according to the two parameter designing skeletons
Each plane.This kind of skeleton is not provided with pin, and pin is replaced by the tap of primary and secondary coil, and such transformer is in charger
Position can be more flexible.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of transformer of New-energy electric vehicle high-power charger, it is characterised in that: cooperate including skeleton and with skeleton
Magnetic core, the magnetic core is provided with two pairs on skeleton, and two pairs of magnetic cores are fitted on skeleton side by side, and the skeleton includes upper
Mounting blocks and lower mounting blocks, support is provided with hollow square tube body, the upper mounting blocks between the upper mounting blocks and lower mounting blocks
It is provided with lower mounting blocks and is connected to the intracorporal through slot of square tube, the magnetic core corresponds respectively to mounting blocks and lower mounting blocks are worn
If crossing corresponding through slot is placed on cooperation in square tube body.
2. a kind of transformer of New-energy electric vehicle high-power charger according to claim 1, it is characterised in that: institute
The magnetic core stated is EE42A magnetic core.
3. a kind of transformer of New-energy electric vehicle high-power charger according to claim 1, it is characterised in that: institute
The two sides of the two sides and lower mounting blocks of stating mounting blocks are provided with baffle, and magnetic core described in two pairs is arranged between baffle.
4. a kind of transformer of New-energy electric vehicle high-power charger according to claim 3, it is characterised in that: institute
It states and is evenly arranged with limited block on the both ends that mounting blocks correspond at baffle.
5. a kind of transformer of New-energy electric vehicle high-power charger according to claim 4, it is characterised in that: institute
It states and is evenly arranged with multiple U-lags on limited block.
6. a kind of transformer of New-energy electric vehicle high-power charger according to claim 5, it is characterised in that: institute
It states to be located on limited block on the block between two U-lags and is provided with positioning protrusion.
7. a kind of transformer of New-energy electric vehicle high-power charger according to claim 3, it is characterised in that: institute
It states and is provided with mounting base at 4 angles of lower mounting blocks.
8. a kind of transformer of New-energy electric vehicle high-power charger according to claim 7, it is characterised in that: institute
It states and is provided with fixing threaded hole in mounting base.
9. a kind of transformer of New-energy electric vehicle high-power charger according to claim 7, it is characterised in that: institute
It states and is provided with deep floor at two end-stopping plates of lower installation board, the connection between baffle and lower installation board is improved by deep floor
Intensity, and deep floor is between corresponding two mounting bases.
10. a kind of transformer of New-energy electric vehicle high-power charger according to claim 1, it is characterised in that:
The section of the hollow square tube body is respectively less than the surface of upper mounting plate and lower installation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300001.2A CN109494053A (en) | 2018-11-02 | 2018-11-02 | A kind of transformer of New-energy electric vehicle high-power charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300001.2A CN109494053A (en) | 2018-11-02 | 2018-11-02 | A kind of transformer of New-energy electric vehicle high-power charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109494053A true CN109494053A (en) | 2019-03-19 |
Family
ID=65693615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811300001.2A Pending CN109494053A (en) | 2018-11-02 | 2018-11-02 | A kind of transformer of New-energy electric vehicle high-power charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109494053A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638650U (en) * | 2009-12-28 | 2010-11-17 | 台达电子工业股份有限公司 | Transformer framework structure |
| CN202816606U (en) * | 2012-09-18 | 2013-03-20 | 马鞍山汇能电子有限公司 | Low-frequency transformer framework |
| CN204144027U (en) * | 2014-07-28 | 2015-02-04 | 北京通力盛达节能设备股份有限公司 | A kind of switch transformer of high power density |
-
2018
- 2018-11-02 CN CN201811300001.2A patent/CN109494053A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638650U (en) * | 2009-12-28 | 2010-11-17 | 台达电子工业股份有限公司 | Transformer framework structure |
| CN202816606U (en) * | 2012-09-18 | 2013-03-20 | 马鞍山汇能电子有限公司 | Low-frequency transformer framework |
| CN204144027U (en) * | 2014-07-28 | 2015-02-04 | 北京通力盛达节能设备股份有限公司 | A kind of switch transformer of high power density |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20190319 |