CN220208722U

CN220208722U - Novel transformer with air passage and multiple windings for charging pile

Info

Publication number: CN220208722U
Application number: CN202321814049.1U
Authority: CN
Inventors: 张俊忠
Original assignee: Guangdong Zhongshun Electric Manufacturing Co ltd
Current assignee: Guangdong Zhongshun Electric Manufacturing Co ltd
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2023-12-19
Anticipated expiration: 2033-07-11

Abstract

The utility model discloses a novel transformer with air passages and multiple windings for a charging pile, which comprises a transformer body, wherein an inner insulating layer and an outer insulating layer are arranged in the transformer body, a plurality of air passages are arranged between the inner insulating layer and the outer insulating layer, 2n groups of coils are arranged in the transformer body, and the coils all cross from the air passages. Compared with the prior art, the utility model has the following advantages: be equipped with 2n group's coils in this novel transformer in altogether, n is positive integer, and the coil is all strideed across from the air flue, and half coil upper end draws forth between lower extreme from air flue and the outer insulating layer from between air flue and the inner insulating layer, and half coil upper end draws forth between lower extreme from between air flue and the outer insulating layer from between air flue and the inner insulating layer. The lengths of the coils crossing the air passage are the same, and when the windings are electrified, the influence of self inductance on the impedance of each coil is kept consistent, so that the impedance of the coils can be basically kept consistent, the working power of the coils is unified, and the stability and the service life of the transformer are improved.

Description

Novel transformer with air passage and multiple windings for charging pile

Technical Field

The utility model relates to the technical field of charging pile transformers, in particular to a novel transformer with air passages and multiple windings for a charging pile.

Background

The charging pile is a charging device for providing energy supplement for an electric automobile, and the operation principle of the charging pile is to convert an external power supply into voltage and current required by the electric automobile so as to charge the electric automobile. The charging pile is provided with a transformer for converting voltage and current, wherein the transformer is provided with a high-voltage winding and a low-voltage winding which are formed by a plurality of coils, and an air passage is arranged between the high-voltage winding and the low-voltage winding. The high-voltage winding absorbs electric energy from the power supply, and the low-voltage winding outputs voltage and current to the electric automobile.

The Chinese patent with publication number of CN207993642U discloses a novel laminated coil transformer of a charging pile, and compared with a traditional circular copper wire, the laminated coil transformer has the advantages that more turns can be wound in a limited winding distance, so that the overall inductance is improved, the occupied space is reduced, and the heat dissipation area of the laminated coil is greatly increased compared with that of the traditional circular copper wire, thereby being beneficial to better heat dissipation; meanwhile, the magnetic core columns in the middle of the two magnetic core bodies penetrate through the magnetic core channel in the center of the coil winding, and the inclined surface structures of the surfaces of the two magnetic core columns are parallel to each other.

However, the windings in the above solutions and the prior art have the following drawbacks: because the air passage is arranged in the transformer, some coils pass through the air passage and do not pass through the air passage, when the windings are electrified, the impedance of each coil is different due to the self-inductance phenomenon, so that the working power of each coil is different, and some coils are not saturated yet but are overloaded. While long-term overload of the coil will seriously affect the life of the transformer. There is therefore a need for a new transformer with air-duct multi-winding for a charging pile to solve the above problems.

Disclosure of Invention

The utility model aims to overcome the problems in the prior art and provides a novel multi-winding transformer with an air passage for a charging pile.

In order to achieve the above purpose, the present utility model adopts the following scheme:

the utility model provides a novel transformer of taking air flue multi-winding for filling electric pile, including the transformer body, be equipped with inner insulating layer and outer insulating layer in the transformer body, be equipped with a plurality of air flue between inner insulating layer and the outer insulating layer, this internal 2n group coil that is equipped with of transformer, n is positive integer, the coil all strides across from the air flue, draw forth the lower extreme from between air flue and the outer insulating layer from between air flue and the inner insulating layer to 1 to n group coil upper end in the 2n group coil, draw forth the lower extreme from between air flue and the inner insulating layer from between air flue and the outer insulating layer to n+1 to 2n group coil upper end. The lengths of the coils crossing the air passage are the same, and when the windings are electrified, the influence of self inductance on the impedance of each coil is kept consistent, so that the impedance of the coils can be basically kept consistent, the working power of the coils is unified, the condition that some coils are not saturated and some coils are overloaded is prevented, and the stability and the service life of the transformer are improved.

Preferably, the air passages are uniformly distributed between the inner insulating layer and the outer insulating layer. The heat dissipation efficiency is improved, and the arrangement of the coils is more convenient.

Preferably, each coil spans an equal length in the airway. The length of each coil crossing the air passage is the same, so that the impedance of the coils is kept consistent, the stability of the transformer is improved, and the service life of the transformer is prolonged.

Preferably, the 1 to n groups of coils and the n+1 to 2n groups of coils are respectively arranged on two opposite sides of the transformer body.

Preferably, the number of airways is 4. The air passages are respectively and uniformly arranged in four directions of the transformer body.

Preferably, the 1 to n sets of coils are bypassed from the airway crossing the n+1 to 2n sets of coils. The length of each coil crossing the air passage is the same, and the influence of self inductance on the impedance of each coil is kept consistent when the winding is electrified, so that the impedance of the coils can be basically kept consistent, the working power of the coils is unified, and the stability and the service life of the transformer are improved.

Compared with the prior art, the utility model has the following advantages: the novel transformer with the air passage and the multiple windings for the charging pile is internally provided with 2n groups of coils, n is a positive integer, the coils span from the air passage, the upper ends of 1 to n groups of coils in the 2n groups of coils are led out from the space between the air passage and the inner insulating layer, the lower ends of n+1 to 2n groups of coils are led out from the space between the air passage and the outer insulating layer, and the lower ends of the coils are led out from the space between the air passage and the inner insulating layer. The lengths of the coils crossing the air passage are the same, and when the windings are electrified, the influence of self inductance on the impedance of each coil is kept consistent, so that the impedance of the coils can be basically kept consistent, the working power of the coils is unified, the condition that some coils are not saturated and some coils are overloaded is prevented, and the stability and the service life of the transformer are improved.

Drawings

The present application is described in further detail below with reference to the drawings and detailed description.

Fig. 1 is a schematic diagram of a winding coil of a novel multi-winding transformer with air channels for a charging pile according to the present utility model.

Fig. 2 is a winding development schematic diagram of a novel multi-winding transformer with air passages for a charging pile according to the present utility model.

Fig. 3 is a schematic top view of a novel transformer with air passage and multiple windings for a charging pile according to the present utility model.

Fig. 4 is a schematic diagram of the front structure of a novel transformer with air channel and multiple windings for a charging pile according to the present utility model.

The drawings include: the transformer comprises a transformer body 1, an inner insulating layer 2, an outer insulating layer 3, an air passage 4 and a coil 5.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

1-4, a novel multi-winding transformer with air passages for charging piles comprises a transformer body 1, wherein an inner insulating layer 2 and an outer insulating layer 3 are arranged in the transformer body 1, a plurality of air passages 4 are arranged between the inner insulating layer 2 and the outer insulating layer 3, 2n groups of coils 5 are arranged in the transformer body 1, n is a positive integer, the coils 5 span from the air passages 4, as shown in fig. 2-4, the upper ends of 1 to n groups of coils 5 in the 2n groups of coils 5 are led out from the air passages 4 to the inner insulating layer 2, the lower ends of n+1 to 2n groups of coils 5 are led out from the air passages 4 to the outer insulating layer 3, and the lower ends of n+1 to 2n groups of coils 5 are led out from the air passages 4 to the inner insulating layer 2. The lengths of the coils 5 crossing the air passage 4 are the same, and when the windings are electrified, the influence of self inductance on the impedance of the coils 5 is kept consistent, so that the impedance of the coils 5 can be basically kept consistent, the working power of the coils is unified, the coils 5 are prevented from being not saturated, the coils 5 are overloaded, and the stability and the service life of the transformer are improved.

Preferably, as shown in fig. 3, the air passages 4 are uniformly distributed between the inner insulating layer 2 and the outer insulating layer 3. The heat dissipation efficiency is improved, and the arrangement of the coils 5 is more convenient.

Preferably, as shown in fig. 1, each coil 5 spans an equal length in the airway 4. The length of each coil 5 crossing the air passage 4 is the same, so that the impedance of the coils 5 is kept consistent, the stability of the transformer is improved, and the service life of the transformer is prolonged.

Preferably, as shown in fig. 3 and 4, the 1 to n groups of coils 5 and the n+1 to 2n groups of coils 5 are respectively disposed on opposite sides of the transformer body 1.

Preferably, as shown in fig. 3, the number of airways 4 is 4. The air passages 4 are uniformly arranged in four directions of the transformer body 1 respectively.

Preferably, as shown in fig. 1-3, the 1 to n sets of coils 5 are bypassed across the n+1 to 2n sets of coils 5 from the airway 4. The length of each coil 5 crossing the air passage 4 is the same, and the influence of self inductance on the impedance of each coil 5 is kept consistent when the windings are electrified, so that the impedance of the coils 5 can be basically kept consistent, the working power of the coils is unified, the stability of the transformer is improved, and the service life of the transformer is prolonged.

Compared with the prior art, the utility model has the following advantages: the novel multi-winding transformer with the air passage 4 for the charging pile is internally provided with 2n groups of coils 5, n is a positive integer, the coils 5 are spanned from the air passage 4, the upper ends of 1 to n groups of coils 5 in the 2n groups of coils 5 are led out from the space between the air passage 4 and the inner insulating layer 2, the lower ends of n+1 to 2n groups of coils 5 are led out from the space between the air passage 4 and the outer insulating layer 3, and the lower ends of n+1 to 2n groups of coils 5 are led out from the space between the air passage 4 and the inner insulating layer 2. The lengths of the coils 5 crossing the air passage 4 are the same, and when the windings are electrified, the influence of self inductance on the impedance of the coils 5 is kept consistent, so that the impedance of the coils 5 can be basically kept consistent, the working power of the coils is unified, the coils 5 are prevented from being not saturated, the coils 5 are overloaded, and the stability and the service life of the transformer are improved.

The foregoing is merely a preferred embodiment of the present application, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present application, and these modifications and substitutions should also be considered as being within the scope of the present application.

Claims

1. The utility model provides a novel transformer of taking air flue multi-winding for filling electric pile, its characterized in that, includes the transformer body, this internal inner insulation layer and the outer insulating layer of being equipped with of transformer, the inner insulation layer with be equipped with a plurality of air flue between the outer insulating layer, this internal 2n group coil that is equipped with of transformer, n is positive integer, the coil is all followed the air flue is strideed across, 2n group 1 to n group coil upper end in the coil draws forth between air flue and the inner insulating layer from between air flue and the outer insulating layer, and n+1 to 2n group coil upper end draw forth between air flue and the outer insulating layer from draw forth between lower extreme from between air flue and the inner insulating layer.

2. The novel multi-winding transformer with air passage for a charging pile according to claim 1, wherein the air passages are uniformly distributed between the inner insulating layer and the outer insulating layer.

3. A novel multi-winding transformer with air channel for a charging pile according to claim 1, wherein each of the coils spans equal lengths in the air channel.

4. The novel multi-winding transformer with air passage for a charging pile according to claim 1, wherein 1 to n groups of coils and n+1 to 2n groups of coils are respectively arranged on two opposite sides of the transformer body.

5. A novel multi-winding transformer with air passages for a charging pile according to claim 1 or 2, wherein the number of air passages is 4.

6. A novel multi-winding transformer with air channel for a charging pile according to claim 1 or 3, wherein 1 to n groups of said coils and n+1 to 2n groups of said coils are bypassed by crossing said air channel.