CN215183466U - Power transformer of energy storage system - Google Patents

Abstract

The utility model relates to the technical field of transformers, in particular to an energy storage system power transformer, which comprises an iron core, a framework and a heat dissipation shell; the framework is arranged inside the iron core; the heat dissipation shell is arranged outside the iron core; the framework comprises an upper layer fixing plate, a lower layer fixing plate and a middle layer fixing plate; winding posts are arranged between the upper fixing plate and the lower fixing plate of the middle fixing plate; a winding groove is arranged in the middle layer fixing plate in a penetrating way; a primary winding is wound on the winding post; and the winding slots are provided with secondary windings. The utility model discloses a set up upper fixed plate, middle level fixed plate and lower floor's fixed plate, wind primary winding and establish on the wrapping post, wind secondary winding and establish in the winding groove, because secondary winding sets up inside the middle level fixed plate for there is sufficient distance between primary winding and the secondary winding, satisfy ann rule distance requirement, can reduce the phenomenon that transformer leakage inductance and the parallelly connected non-flow equalizing of traditional winding multiconductor, reduce primary winding problem of generating heat.

Description

Power transformer of energy storage system

Technical Field

The utility model relates to a transformer technical field, concretely relates to energy storage system power transformer.

Background

With the development of automation and intelligence of factory and family life, more and more electrical appliances enter our life, and the common work of the electrical appliances needs stable voltage to ensure the normal work of each electrical appliance and bring convenience to people's life, and we often use a transformer to carry out voltage, current and impedance conversion, voltage stabilization, isolation and the like.

At present, the transformer is wound by adopting a magnetic core and a conventional framework, the structure is output by multiple windings, and gaps between primary and secondary windings cannot be controlled, so that leakage inductance is relatively large, and the efficiency of the transformer is relatively low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned among the prior art not enough, provide an energy storage system power transformer, can reduce the transformer and leak the sense.

The purpose of the utility model is realized through the following technical scheme: an energy storage system power transformer comprises an iron core, a framework and a heat dissipation shell; the framework is arranged inside the iron core; the heat dissipation shell is arranged outside the iron core;

the framework comprises an upper layer fixing plate, a lower layer fixing plate and a middle layer fixing plate arranged between the upper layer fixing plate and the lower layer fixing plate; winding posts are arranged between the upper layer fixing plate and the middle layer fixing plate and between the middle layer fixing plate and the lower layer fixing plate; a winding groove is arranged in the middle layer fixing plate in a penetrating way; a primary winding is wound on the winding post; and the winding slots are provided with secondary windings.

The utility model is further arranged in that the iron core comprises a first core column, a second core column and a third core column; the second core column is arranged between the first core column and the third core column;

the framework is arranged between the first core column and the third core column; the upper fixing plate, the lower fixing plate, the middle fixing plate and the winding post are provided with through holes in a penetrating manner; the through hole is communicated with the winding groove; the second core column is arranged in the through hole.

The utility model is further provided with that the middle layer fixing plate comprises a first middle layer fixing plate, a second middle layer fixing plate and a third middle layer fixing plate;

winding posts are arranged between the upper layer fixing plate and the first middle layer fixing plate, between the first middle layer fixing plate and the second middle layer fixing plate, between the second middle layer fixing plate and the third middle layer fixing plate and between the third middle layer fixing plate and the lower layer fixing plate.

The utility model is further arranged that the secondary winding comprises a first copper sheet which is stacked in the winding groove in the first middle layer fixing plate, a second copper sheet which is stacked in the winding groove in the second middle layer fixing plate and a third copper sheet which is stacked in the winding groove in the third middle layer fixing plate; the first copper sheet, the second copper sheet and the third copper sheet extend to form a first connecting part, a second connecting part and a third connecting part respectively; the first connecting portion, the second connecting portion and the third connecting portion are sequentially stacked.

The utility model is further arranged that a first insulating sheet is arranged between two adjacent first copper sheets; a second insulating sheet is arranged between every two adjacent second copper sheets; a third insulating sheet is arranged between every two adjacent third copper sheets; the first connecting part is provided with a first bending part; the third connecting portion is provided with a third bending portion.

The utility model is further arranged that one side of the middle layer fixing plate is provided with an opening communicated with the winding groove;

and a first wiring groove is formed in the other side of the middle-layer fixing plate.

The utility model is further arranged that the top of the upper layer fixing plate is provided with an upper positioning plate; the top of the lower fixing plate is provided with a lower positioning plate; the upper positioning plate is positioned with the top of the iron core; the lower positioning plate is positioned with the bottom of the iron core;

and reinforcing ribs are arranged between the upper positioning plate and the upper layer fixing plate and between the lower positioning plate and the lower layer fixing plate.

The upper fixing plate and the lower fixing plate are provided with second wiring grooves; the second wiring groove is arranged between two reinforcing ribs.

The utility model is further arranged that the framework comprises a bottom plate; a first upright post and a second upright post are respectively arranged on two sides of the bottom plate; the first upright post and the second upright post are arranged oppositely; a first top plate extends towards the direction of the second upright column from one end of the first upright column, which is far away from the bottom plate; a second top plate extends towards the first upright column from one end of the second upright column far away from the bottom plate; a heat dissipation window is arranged between the first top plate and the second top plate; the first top plate and the second top plate are both provided with a plurality of radiating air grooves;

a first baffle extends from one side surface of the first upright column towards the direction of the second upright column; a second baffle extends from one side surface of the second upright column towards the direction of the first upright column;

the iron core is arranged among the bottom plate, the first stand column, the second stand column, the first top plate and the second top plate.

The utility model is further provided that the bottom plate, the first upright post, the second upright post, the first top plate and the second top plate are integrally formed;

the bottom plate, the first upright post, the second upright post, the first top plate and the second top plate are all made of metal materials;

the bottom plate is rectangular; the first upright post and the second upright post are respectively arranged on two opposite sides of the rectangular bottom plate;

the corners of the bottom plate are provided with fixing holes;

the first upright post and the second upright post are arranged in parallel;

the first top plate, the second top plate and the bottom plate are arranged in parallel.

The utility model discloses further set up to, primary winding is formed around every wrapping post in proper order by an enameled wire.

The utility model has the advantages that: the utility model discloses a set up the upper fixed plate, middle level fixed plate and lower floor's fixed plate, when carrying out the transformer equipment, with primary winding around establishing on the wrapping post, in addition with secondary winding around establishing in the winding groove, because secondary winding sets up inside middle level fixed plate, make there is sufficient distance between primary winding and the secondary winding, satisfy ann rule distance requirement easily, and can reduce the phenomenon that transformer leakage inductance and the parallelly connected non-flow equalizing of traditional winding multiconductor, can effectively reduce primary winding problem of generating heat.

Drawings

The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the iron core and the heat dissipation casing of the present invention;

fig. 3 is a schematic structural diagram of the housing of the present invention;

FIG. 4 is a schematic structural view of the framework of the present invention;

FIG. 5 is a schematic structural view of the framework of the present invention from another perspective;

FIG. 6 is a cross-sectional view of the frame of the present invention;

fig. 7 is a schematic structural diagram of the framework of the present invention cooperating with the secondary winding;

fig. 8 is an exploded view of the secondary winding of the present invention;

wherein: 1. an iron core; 11. a first stem; 12. a second stem; 13. a third stem; 2. a framework; 21. an upper fixing plate; 22. a lower fixing plate; 23. a winding post; 24. perforating; 3. a heat dissipation housing; 31. a base plate; 32. a first upright post; 33. a second upright post; 34. a heat dissipation window; 35. a first baffle plate; 36. a second baffle; 37. a first top plate; 38. a second top plate; 39. a heat dissipation air tank; 41. a first middle fixing plate; 42. a second middle fixing plate; 43. a third middle fixing plate; 44. a winding slot; 45. an opening; 46. a first wiring duct; 51. a first copper sheet; 52. a second copper sheet; 53. a third copper sheet; 61. a first connection portion; 62. a second connecting portion; 63. a third connecting portion; 71. a first insulating sheet; 72. a second insulating sheet; 73. a third insulating sheet; 74. a first bent portion; 75. a third bent portion; 81. an upper positioning plate; 82. a lower positioning plate; 83. reinforcing ribs; 84. a second wiring duct; 9. and (7) fixing holes.

Detailed Description

The invention will be further described with reference to the following examples.

As can be seen from fig. 1 to 8, the energy storage system power transformer of the present embodiment includes an iron core 1, a framework 2, and a heat dissipation housing 3; the framework 2 is arranged inside the iron core 1; the heat dissipation shell 3 is arranged outside the iron core 1;

the framework 2 comprises an upper fixing plate 21, a lower fixing plate 22 and a middle fixing plate arranged between the upper fixing plate 21 and the lower fixing plate 22; winding posts 23 are arranged between the upper fixing plate 21 and the middle fixing plate and between the middle fixing plate and the lower fixing plate 22; a winding groove 44 is arranged in the middle fixing plate in a penetrating way; a primary winding is wound on the winding post 23; the winding slot 44 is provided with a secondary winding; the primary winding is not shown in the figure.

Specifically, in the energy storage system power transformer of the embodiment, the iron core 1 is assembled by two E-shaped iron sheets which are arranged oppositely; skeleton 2 is through setting up upper fixed plate 21, middle level fixed plate and lower floor's fixed plate 22, when carrying out the transformer equipment, establish primary winding around on winding post 23, in addition with secondary winding around establishing in winding groove 44, then install iron core 1 outside skeleton 2, then assemble heat dissipation shell 3 outside iron core 1, because secondary winding sets up inside middle level fixed plate, make there is sufficient distance between primary winding and the secondary winding, satisfy ann rule distance requirement easily, this embodiment can reduce the phenomenon that transformer leakage inductance and the parallelly connected non-uniform current of traditional winding multiconductor through sandwich winding method in addition, can effectively reduce primary winding problem of generating heat.

In the power transformer of the energy storage system according to this embodiment, the iron core 1 includes a first core leg 11, a second core leg 12, and a third core leg 13; the second core leg 12 is arranged between the first core leg 11 and the third core leg 13;

the framework 2 is arranged between the first core column 11 and the third core column 13; the upper fixing plate 21, the lower fixing plate 22, the middle fixing plate and the winding post 23 are all provided with through holes 24 in a penetrating way; the through hole 24 is communicated with the winding slot 44; the second stem 12 is disposed within the bore 24.

In particular, the embodiment enables the energy storage system power transformer to be compact and reasonable in structure through the structure, and can facilitate the coupling of the primary winding and the secondary winding.

In the power transformer of the energy storage system of this embodiment, the middle fixing plate includes a first middle fixing plate 41, a second middle fixing plate 42 and a third middle fixing plate 43;

the winding posts 23 are disposed between the upper fixing plate 21 and the first middle fixing plate 41, between the first middle fixing plate 41 and the second middle fixing plate 42, between the second middle fixing plate 42 and the third middle fixing plate 43, and between the third middle fixing plate 43 and the lower fixing plate 22.

Specifically, this embodiment is through setting up three middle level fixed plate to all be provided with wrapping post 23 between the three middle level fixed plate, all wear to be equipped with wire winding groove 44 in the three middle level fixed plate, thereby realize sandwich winding method, can reduce the phenomenon that transformer leakage inductance and the parallelly connected non-flow equalizing of traditional winding multiconductor, can effectively reduce the primary winding problem of generating heat.

In the power transformer of the energy storage system according to this embodiment, the secondary winding includes a first copper sheet 51 stacked in the winding slot 44 of the first middle fixing plate 41, a second copper sheet 52 stacked in the winding slot 44 of the second middle fixing plate 42, and a third copper sheet 53 stacked in the winding slot 44 of the third middle fixing plate 43; the first copper sheet 51, the second copper sheet 52 and the third copper sheet 53 extend to form a first connecting part 61, a second connecting part 62 and a third connecting part 63 respectively; the first connecting portion 61, the second connecting portion 62, and the third connecting portion 63 are sequentially stacked. Specifically, this embodiment stacks first connecting portion 61, second connecting portion 62 and third connecting portion 63 together for the pin of drawing forth of secondary winding is directly parallelly connected together, need not use traditional copper bar welding a plurality of copper sheets's mode to link together, thereby realizes that the electric connection between each electrical connection point is more reliable, and contact resistance is littleer, makes to reduce under the heavy current condition and generate heat, has higher power density and electrical connection point's reliability.

In the energy storage system power transformer described in this embodiment, a first insulating sheet 71 is disposed between two adjacent first copper sheets 51; a second insulating sheet 72 is arranged between two adjacent second copper sheets 52; a third insulating sheet 73 is arranged between every two adjacent third copper sheets 53; the first connecting portion 61 is provided with a first bending portion 74; the third connecting portion 63 is provided with a third bending portion 75. Since the distances between two adjacent first copper sheets 51 and between two adjacent third copper sheets 53 are short, the first insulating sheet 71 and the second insulating sheet are provided to prevent short circuits, and the distance between the first copper sheets 51 and the second copper sheets 52 and the distance between the second copper sheets 52 and the third copper sheets 53 can be increased by providing the first bent portion 74 and the third bent portion 75.

In the power transformer of the energy storage system according to this embodiment, an opening 45 communicated with the winding slot 44 is formed at one side of the middle fixing plate; the secondary winding is convenient to assemble and lead out of the lead of the secondary winding through the arrangement.

The other side of the middle fixing plate is provided with a first wiring groove 46. The arrangement is convenient for leading out the primary winding.

In the power transformer of the energy storage system according to this embodiment, an upper positioning plate 81 is disposed at the top of the upper fixing plate 21; the top of the lower fixing plate 22 is provided with a lower positioning plate 82; the upper positioning plate 81 is positioned with the top of the iron core 1; the lower positioning plate 82 is positioned with the bottom of the iron core 1; the framework 2 is conveniently fixed in the iron core 1 through the arrangement.

Reinforcing ribs 83 are arranged between the upper positioning plate 81 and the upper fixing plate 21 and between the lower positioning plate 82 and the lower fixing plate 22. The strength of the upper positioning plate 81 and the lower positioning plate 82 can be enhanced by the above arrangement.

The upper fixing plate 21 and the lower fixing plate 22 are both provided with a second wiring groove 84; the second cabling channel 84 is arranged between two of the reinforcing bars 83. The arrangement facilitates the leading-out of the primary winding, and the slot-divided drawer type framework 2 can be compact in structure.

In the power transformer of the energy storage system according to this embodiment, the bobbin 2 includes a bottom plate 31; a first upright column 32 and a second upright column 33 are respectively arranged on two sides of the bottom plate 31; the first upright column 32 is opposite to the second upright column 33; a first top plate 37 extends from one end of the first upright column 32 far away from the bottom plate 31 towards the direction of the second upright column 33; a second top plate 38 extends from one end of the second upright column 33 far away from the bottom plate 31 towards the direction of the first upright column 32; a heat dissipation window 34 is arranged between the first top plate 37 and the second top plate 38; the first top plate 37 and the second top plate 38 are both provided with a plurality of heat dissipation air slots 39;

a first baffle 35 extends from one side of the first upright column 32 towards the direction of the second upright column 33; a second baffle 36 extends from one side surface of the second upright post 33 towards the direction of the first upright post 32;

the iron core 1 is disposed between the bottom plate 31, the first column 32, the second column 33, the first top plate 37, and the second top plate 38.

Specifically, the present embodiment positions the core 1 of the transformer in the vertical direction by mounting the core 1 between the bottom plate 31, the first column 32, the second column 33, the first top plate 37, and the second top plate 38, the first top plate 37, the second top plate 38, and the bottom plate 31, positions the core 1 in the horizontal direction by the first barrier 35 and the second barrier 36, thereby positioning and fixing the iron core 1 between the bottom plate 31, the first column 32, the second column 33, the first top plate 37 and the second top plate 38, and the heat dissipation windows 34 and the heat dissipation air grooves 39 between the first top plate 37 and the second top plate 38 facilitate the circulation of air, facilitate the heat dissipation of the core 1, in addition, because the first upright column 32 and the second upright column 33 cling to two side surfaces of the iron core 1, and in addition, the other two side surfaces of the iron core 1 are exposed in the air, so that the heat dissipation of the iron core 1 and the transformer is further facilitated.

In the energy storage system power transformer according to this embodiment, the bottom plate 31, the first upright column 32, the second upright column 33, the first top plate 37 and the second top plate 38 are integrally formed; the transformer heat dissipation shell 3 is convenient to produce and manufacture through the arrangement.

The bottom plate 31, the first upright column 32, the second upright column 33, the first top plate 37 and the second top plate 38 are all made of metal; the bottom plate 31, the first upright column 32, the second upright column 33, the first top plate 37 and the second top plate 38 may be made of iron, aluminum or copper with better heat dissipation performance.

The bottom plate 31 is rectangular; the first upright column 32 and the second upright column 33 are respectively arranged on two opposite sides of the rectangular bottom plate 31; the structure of the heat dissipation shell 3 of the transformer is stable and reliable through the arrangement.

The corners of the bottom plate 31 are provided with fixing holes 9; the energy storage system power transformer is convenient to be fixedly arranged on external equipment by arranging the fixing hole 9.

The first upright column 32 and the second upright column 33 are arranged in parallel; the structure of the heat dissipation shell 3 of the transformer is stable and reliable through the arrangement.

The first top plate 37, the second top plate 38, and the bottom plate 31 are arranged in parallel. The structure of the heat dissipation shell 3 of the transformer is stable and reliable through the arrangement.

In the power transformer of the energy storage system according to this embodiment, the primary winding is formed by sequentially surrounding each winding post 23 with an enameled wire. The energy storage system power transformer is stable in use and convenient to produce and manufacture through the arrangement.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. An energy storage system power transformer, characterized by: comprises an iron core (1), a framework (2) and a heat dissipation shell (3); the framework (2) is arranged inside the iron core (1); the heat dissipation shell (3) is arranged outside the iron core (1);

the framework (2) comprises an upper fixing plate (21), a lower fixing plate (22) and a middle fixing plate arranged between the upper fixing plate (21) and the lower fixing plate (22); winding posts (23) are arranged between the upper fixing plate (21) and the middle fixing plate and between the middle fixing plate and the lower fixing plate (22); a winding groove (44) is arranged in the middle fixing plate in a penetrating way; a primary winding is wound on the winding post (23); the winding slots (44) are provided with secondary windings.

2. An energy storage system power transformer as claimed in claim 1, wherein: the core (1) comprises a first core leg (11), a second core leg (12) and a third core leg (13); the second core column (12) is arranged between the first core column (11) and the third core column (13);

the framework (2) is arranged between the first core column (11) and the third core column (13); the upper fixing plate (21), the lower fixing plate (22), the middle fixing plate and the winding post (23) are provided with through holes (24) in a penetrating way; the through hole (24) is communicated with the winding groove (44); the second stem (12) is disposed within the bore (24).

3. An energy storage system power transformer as claimed in claim 1, wherein: the middle layer fixing plate comprises a first middle layer fixing plate (41), a second middle layer fixing plate (42) and a third middle layer fixing plate (43);

winding posts (23) are arranged between the upper layer fixing plate (21) and the first middle layer fixing plate (41), between the first middle layer fixing plate (41) and the second middle layer fixing plate (42), between the second middle layer fixing plate (42) and the third middle layer fixing plate (43) and between the third middle layer fixing plate (43) and the lower layer fixing plate (22).

4. An energy storage system power transformer as claimed in claim 3, wherein: the secondary winding comprises a first copper sheet (51) which is stacked in a winding groove (44) in the first middle fixing plate (41), a second copper sheet (52) which is stacked in a winding groove (44) in the second middle fixing plate (42), and a third copper sheet (53) which is stacked in a winding groove (44) in the third middle fixing plate (43); the first copper sheet (51), the second copper sheet (52) and the third copper sheet (53) are respectively extended with a first connecting part (61), a second connecting part (62) and a third connecting part (63); the first connecting portion (61), the second connecting portion (62) and the third connecting portion (63) are sequentially stacked.

5. An energy storage system power transformer as claimed in claim 4, wherein: a first insulating sheet (71) is arranged between every two adjacent first copper sheets (51); a second insulating sheet (72) is arranged between every two adjacent second copper sheets (52); a third insulating sheet (73) is arranged between every two adjacent third copper sheets (53); the first connecting part (61) is provided with a first bending part (74); the third connecting portion (63) is provided with a third bending portion (75).

6. An energy storage system power transformer as claimed in claim 1, wherein: one side of the middle layer fixing plate is provided with an opening (45) communicated with the winding groove (44);

the other side of the middle layer fixing plate is provided with a first wiring groove (46).

7. An energy storage system power transformer as claimed in claim 1, wherein: an upper positioning plate (81) is arranged at the top of the upper fixing plate (21); the top of the lower fixing plate (22) is provided with a lower positioning plate (82); the upper positioning plate (81) is positioned with the top of the iron core (1); the lower positioning plate (82) is positioned with the bottom of the iron core (1);

reinforcing ribs (83) are arranged between the upper positioning plate (81) and the upper layer fixing plate (21) and between the lower positioning plate (82) and the lower layer fixing plate (22);

the upper fixing plate (21) and the lower fixing plate (22) are provided with second wiring grooves (84); the second wiring groove (84) is arranged between two reinforcing ribs (83).

8. An energy storage system power transformer as claimed in claim 1, wherein: the framework (2) comprises a bottom plate (31); a first upright post (32) and a second upright post (33) are respectively arranged on two sides of the bottom plate (31); the first upright post (32) and the second upright post (33) are arranged oppositely; a first top plate (37) extends towards the direction of the second upright post (33) from one end of the first upright post (32) far away from the bottom plate (31); a second top plate (38) extends towards the first upright column (32) from one end, far away from the bottom plate (31), of the second upright column (33); a heat dissipation window (34) is arranged between the first top plate (37) and the second top plate (38); the first top plate (37) and the second top plate (38) are both provided with a plurality of radiating air grooves (39);

a first baffle (35) extends from one side of the first upright post (32) towards the direction of the second upright post (33); a second baffle (36) extends from one side of the second upright column (33) towards the direction of the first upright column (32);

the iron core (1) is arranged among the bottom plate (31), the first upright post (32), the second upright post (33), the first top plate (37) and the second top plate (38).

9. An energy storage system power transformer as claimed in claim 8, wherein: the bottom plate (31), the first upright post (32), the second upright post (33), the first top plate (37) and the second top plate (38) are integrally formed;

the bottom plate (31), the first upright column (32), the second upright column (33), the first top plate (37) and the second top plate (38) are all made of metal materials;

the bottom plate (31) is rectangular; the first upright post (32) and the second upright post (33) are respectively arranged on two opposite sides of the rectangular bottom plate (31);

the corners of the bottom plate (31) are provided with fixing holes (9);

the first upright post (32) and the second upright post (33) are arranged in parallel;

the first top plate (37), the second top plate (38), and the bottom plate (31) are arranged in parallel.

10. An energy storage system power transformer as claimed in claim 1, wherein: the primary winding is formed by sequentially surrounding each winding post (23) by an enameled wire.

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