CN106160478A - A kind of structure for the combined transformer in electric vehicle vehicle power - Google Patents
A kind of structure for the combined transformer in electric vehicle vehicle power Download PDFInfo
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- CN106160478A CN106160478A CN201510175374.1A CN201510175374A CN106160478A CN 106160478 A CN106160478 A CN 106160478A CN 201510175374 A CN201510175374 A CN 201510175374A CN 106160478 A CN106160478 A CN 106160478A
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Abstract
The present invention proposes a kind of structure for the combined transformer in electric vehicle vehicle power, it is characterised in that the primary side winding of multiple transformers is connected in series, and vice-side winding is connected in parallel；Or the primary side winding of multiple transformer is connected in parallel, vice-side winding is connected in series.The invention provides a kind of simple in construction, low cost, the structure of the transformer of the good applicable high power density power supply of performance.
Description
Technical field
The present invention relates to field of switch power, particularly relate to the DC-DC converter of high power density.
Background technology
In traditional Switching Power Supply, the height of product is determined by magnetic element therein often.In the product of primary and secondary side isolation, the height of transformer is the principal element affecting product height.The vehicle power of electric vehicle is typically at the power grade of thousands of watts.The volume of transformer and height are all very big, and therefore the volume of the vehicle power on market is all bigger.A kind of common practice improving power density is to use flat-plate transformer, and winding is made in pcb board.The benefit of flat-plate transformer is a lot, including size is little, parasitic parameter is stable, no-welding-spot etc..But the design of flat winding is made rule by pcb board and is limited.When umber of turn is bigger, the utilization rate of Copper Foil significantly declines, and makes the design of high-power transformer become very difficult.The electrokinetic cell voltage that the input voltage of vehicle power or output voltage are up to hundreds of volts, under acceptable magnetic core size, the number of turn of the Transformer Winding needs coupling with this high pressure phase is very big.Therefore the vehicle power product of flat-plate transformer is not used on market so far.
The present invention is directed to electric-vehicle-mounted power supply and propose the structure of a kind of combined transformer, make flat-plate transformer be applicable to high-power applications.
Content of the invention
The technical problem to be solved is to provide a kind of structure for the combined transformer in electric vehicle vehicle power.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of structure for the combined transformer in electric vehicle vehicle power, it is characterised in that the primary side winding of multiple transformers is connected in series, and vice-side winding is connected in parallel；In majority application, the number of turn of the primary side winding of above-mentioned multiple transformers is identical, and the number of turn of vice-side winding is also identical so that the load of each transformer is identical.Phase antithesis ground, the primary side winding of multiple transformers is connected in parallel, and vice-side winding is connected in series；In majority application, the number of turn of the primary side winding of above-mentioned multiple transformers is identical, and the number of turn of vice-side winding is identical.
Brief description
Fig. 1 is the primary side winding series connection of three transformers, and secondary is around the combined transformer schematic diagram of this parallel connection.
Fig. 2 is that the primary side winding of three transformers is in parallel, the combined transformer schematic diagram that secondary is connected around this.
Detailed description of the invention
Provide present pre-ferred embodiments below in conjunction with the accompanying drawings, to describe technical scheme in detail.
The present invention provides a kind of structure for the combined transformer in electric vehicle vehicle power.Using the primary side winding series connection of three transformers of this structure, vice-side winding combined transformer in parallel is as shown in Fig. 1.This combined transformer comprises the first transformer T101, the second transformer T101 and the 3rd transformer T103.T101 comprises primary side winding Np_101 and vice-side winding Ns_101；T102 comprises primary side winding Np_102 and vice-side winding Ns_102；T103 comprises primary side winding Np_103 and vice-side winding Ns_103.Primary side winding Np_101 of above three transformer, Np_102, Np_103 are according to being connected in series along polarity, and vice-side winding Ns_101, Ns_102, Ns_103 same polarity is in parallel.The feature of this structure is that the electric current of three primary side winding is identical, and the voltage of three vice-side winding is identical.By the selection to the number of turn, the power proportions that each transformer undertakes can be designed.
Preferably, the number of turn of the primary side winding of above three transformer is identical, and the number of turn of vice-side winding is also identical.Owing to three, former limit winding flows through same electric current, the electric current in three windings of secondary of three transformers is inevitable identical.And the voltage of the vice-side winding of three transformers is also inevitable identical because of parallel-connection structure.Therefore the power of three transformers is identical.
The present invention provides the another kind of structure for the combined transformer in electric vehicle vehicle power.The primary side winding using three transformers of this structure is in parallel, and the combined transformer of vice-side winding series connection is as shown in Figure 2.This combined transformer comprises the first transformer T201, the second transformer T201 and the 3rd transformer T203.T201 comprises primary side winding Np_201 and vice-side winding Ns_201；T202 comprises primary side winding Np_202 and vice-side winding Ns_202；T203 comprises primary side winding Np_203 and vice-side winding Ns_203.Primary side winding Np_201 of above three transformer, Np_202, Np_203 same polarity is in parallel, vice-side winding Ns_101, and Ns_102, Ns_103 are connected in series according to along polarity.The feature of this structure is that the voltage of three primary side winding is identical, and the electric current of three vice-side winding is identical.By the selection to the number of turn, the power proportions that each transformer undertakes can be designed.
Preferably, the number of turn of the primary side winding of above three transformer is identical, and the number of turn of vice-side winding is also identical.Owing to three windings of secondary flow through same electric current, the electric current in the winding of three, the former limit of three transformers is inevitable identical.And the voltage of the primary side winding of three transformers is also inevitable identical because of parallel-connection structure.Therefore the power of three transformers is identical.
Although above-mentioned circuit and control method are the narration to three transformers, its principle is equally applicable to the structure of multiple transformers.
Although the foregoing describing the detailed description of the invention of the present invention, it will be appreciated by those of skill in the art that these are merely illustrative of, on the premise of without departing substantially from the principle of the present invention and essence, various changes or modifications can be made to these embodiments.Therefore, protection scope of the present invention is defined by the appended claims.
Claims (4)
1. the structure for the combined transformer in electric vehicle vehicle power, it is characterised in that the primary side winding of multiple transformers is connected in series, and vice-side winding is connected in parallel.
2. the structure for the combined transformer in electric vehicle vehicle power as claimed in claim 1, it is characterised in that the number of turn of the primary side winding of above-mentioned multiple transformers is identical, and the number of turn of vice-side winding is identical.
3. the structure for the combined transformer in electric vehicle vehicle power, it is characterised in that the primary side winding of multiple transformers is connected in parallel, and vice-side winding is connected in series.
4. the structure for the combined transformer in electric vehicle vehicle power as claimed in claim 3, it is characterised in that the number of turn of the primary side winding of above-mentioned multiple transformers is identical, and the number of turn of vice-side winding is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175374.1A CN106160478A (en) | 2015-04-14 | 2015-04-14 | A kind of structure for the combined transformer in electric vehicle vehicle power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175374.1A CN106160478A (en) | 2015-04-14 | 2015-04-14 | A kind of structure for the combined transformer in electric vehicle vehicle power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106160478A true CN106160478A (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510175374.1A Pending CN106160478A (en) | 2015-04-14 | 2015-04-14 | A kind of structure for the combined transformer in electric vehicle vehicle power |
Country Status (1)
| Country | Link |
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| CN (1) | CN106160478A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391167A (en) * | 2018-11-15 | 2019-02-26 | 南京工业大学 | A kind of new-type high frequency ozone driver |
| CN110808149A (en) * | 2019-10-11 | 2020-02-18 | 西安交通大学 | Low-leakage-inductance multistage multi-primary-side multi-secondary-side pulse transformer and winding method thereof |
-
2015
- 2015-04-14 CN CN201510175374.1A patent/CN106160478A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391167A (en) * | 2018-11-15 | 2019-02-26 | 南京工业大学 | A kind of new-type high frequency ozone driver |
| CN110808149A (en) * | 2019-10-11 | 2020-02-18 | 西安交通大学 | Low-leakage-inductance multistage multi-primary-side multi-secondary-side pulse transformer and winding method thereof |
| CN110808149B (en) * | 2019-10-11 | 2022-02-22 | 西安交通大学 | Low-leakage-inductance multistage multi-primary-side multi-secondary-side pulse transformer and winding method thereof |
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Application publication date: 20161123 |