CN114496520A

CN114496520A - Heat dissipation formula transformer skeleton

Info

Publication number: CN114496520A
Application number: CN202210151605.5A
Authority: CN
Inventors: 骆仁明
Original assignee: Tianchang Ruirong Plastic Industry Co ltd
Current assignee: Tianchang Ruirong Plastic Industry Co ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-05-13

Abstract

The application provides a heat dissipation formula transformer skeleton relates to transformer technical field, and its technical essential is: the inner framework is fixed inside the outer framework, the primary coil and the secondary coil are wound on the inner framework, a plurality of first air flow channels are arranged on the inner framework, two ends of each first air flow channel extend to two ends of the outer framework respectively, the first air flow channels are located on the inner side of the primary coil, the first air flow channels penetrate through two ends of the inner framework, and the inner side surface of the primary coil is partially exposed in the first air flow channels. Primary coil and secondary coil generate heat after the circular telegram, the vertical setting of outer skeleton, the inside air of outer skeleton heaies up, and hot-air rises to the rising and discharges from outer skeleton, and inside cold air flowed into outer skeleton from the lower extreme of outer skeleton, the heat exchange of the inside air of outer skeleton was realized, drives the air flow in the first airflow channel simultaneously and flows, realizes carrying out the forced air cooling to the secondary coil medial surface, improves the radiating efficiency of transformer.

Description

Heat dissipation formula transformer skeleton

Technical Field

The application relates to the technical field of transformers, in particular to a heat dissipation type transformer framework.

Background

The transformer framework is a device for supporting and fixing a coil in a transformer, the transformer framework for the electric vehicle charger in the prior art generally comprises a rectangular frame-shaped iron core, the iron core is made of an iron material, a primary coil is wound on one edge of the iron core, a secondary coil is wound on the other edge of the iron core, the primary coil and the secondary coil are respectively connected with a circuit on a PCB (printed circuit board) of the electric vehicle charger, the number of winding turns of the primary coil is different from that of the secondary coil, when the primary coil is switched on with alternating current, alternating current can be generated in the secondary coil, and the ratio of the voltage size in the primary coil to the voltage size in the secondary coil corresponds to the ratio of the number of winding turns of the secondary coil to the number of winding turns of the secondary coil, so that the effect of boosting or reducing voltage is achieved.

However, the number of winding layers of the coil in the transformer framework for the electric vehicle charger in the prior art is large, heat inside the coil is difficult to dissipate into the air, the heat dissipation efficiency of the transformer is low, the resistance of the coil is increased due to the temperature rise of the coil, and the loss of electric energy is increased.

Disclosure of Invention

The application provides a heat dissipation formula transformer skeleton for solve the problem that transformer radiating efficiency is low among the prior art.

In order to achieve the above purpose, the embodiments of the present application propose the following technical solutions:

the utility model provides a heat dissipation formula transformer skeleton, includes inner frame and exoskeleton, the exoskeleton is the rectangle barrel form, the inner frame is fixed the inside of exoskeleton, primary coil and secondary winding twine on the inner frame, and the iron core alternates on the exoskeleton, be equipped with a plurality of first airflow channel on the exoskeleton, the both ends of first airflow channel stretch to respectively the both ends of exoskeleton, first airflow channel is located the inboard of primary coil, first airflow channel sets up along being on a parallel with the direction of the central axis of primary coil, first airflow channel runs through the both ends of exoskeleton, the medial surface part of primary coil is exposed in the first airflow channel.

In some embodiments, the inner bobbin includes a primary bobbin, the first air flow passages are disposed on an outer side of the primary bobbin, the first air flow passages are arranged at equal intervals around the primary bobbin, the first air flow passages penetrate through both ends of the primary bobbin in a central axis direction of the primary bobbin, the primary coil is wound on the primary bobbin, and the primary core bar of the iron core is inserted into the primary bobbin.

In some embodiments, the first air flow channel penetrates the primary bobbin in a direction perpendicular to an outer side of the primary bobbin, the outer side of the primary core bar being partially exposed in the first air flow channel.

In some embodiments, the inner frame further includes a secondary bobbin, a plurality of second airflow channels are disposed on an outer side surface of the secondary bobbin, the second airflow channels are arranged around the secondary bobbin at equal intervals, a secondary coil is wound on the secondary bobbin, the secondary bobbin and the primary bobbin are arranged side by side, a secondary core bar of the iron core is inserted into the secondary bobbin, a part of an inner side surface of the secondary coil is exposed in the second airflow channels, two ends of the second airflow channels extend to two ends of the outer frame, the second airflow channels are disposed in a direction parallel to a central axis of the secondary coil, and the second airflow channels penetrate through two ends of the secondary bobbin.

In some embodiments, the second airflow passage penetrates the secondary bobbin in a direction perpendicular to an outer side surface of the secondary bobbin, the outer side surface of the secondary core bar being partially exposed in the second airflow passage.

In some embodiments, the inner frame further includes a first partition plate perpendicular to the central axis of the primary bobbin, one end of the primary bobbin is fixedly connected to the first partition plate, one end of the secondary bobbin is fixedly connected to the first partition plate, the primary bobbin and the secondary bobbin are located on the same side of the first partition plate, the inner hole of the primary bobbin penetrates through the first partition plate, the inner hole of the secondary bobbin penetrates through the first partition plate, the first air flow passage penetrates through the first partition plate, the second air flow passage penetrates through the first partition plate, and the outer edge of the first partition plate is fixedly connected to the inner side surface of the outer frame.

In some embodiments, the inner frame further includes a second partition plate, the second partition plate is parallel to the first partition plate, the primary bobbin and the secondary bobbin are located between the first partition plate and the second partition plate, an end of the primary bobbin away from the first partition plate is fixedly connected to the second partition plate, an end of the secondary bobbin away from the first partition plate is fixedly connected to the second partition plate, an inner hole of the secondary bobbin penetrates through the second partition plate, the first air flow channel penetrates through the second partition plate, the second air flow channel penetrates through the second partition plate, and an outer edge of the second partition plate is fixedly connected to an inner side surface of the outer frame.

In some embodiments, a plurality of first primary heat dissipating through holes are formed in the first partition, the first primary heat dissipating through holes are arranged around the primary winding drum at equal intervals, the primary winding is located between the first primary heat dissipating through holes and the first air flow channel, and the first primary heat dissipating through holes are arranged close to the outer side surface of the primary winding;

a plurality of second primary heat dissipation through holes are formed in the second partition plate, the second primary heat dissipation through holes are arranged around the secondary winding drum at equal intervals, the primary coil is located between the second primary heat dissipation through holes and the first air flow channel, and the second primary heat dissipation through holes are arranged close to the outer side face of the primary coil;

a plurality of first secondary heat dissipation through holes are formed in the first partition plate, the first secondary heat dissipation through holes are arranged around the primary winding drum at equal intervals, the secondary coils are located between the first secondary heat dissipation through holes and the second airflow channel, and the first secondary heat dissipation through holes are arranged close to the outer side faces of the secondary coils;

be equipped with a plurality of secondary heat dissipation through-hole on the second baffle, secondary heat dissipation through-hole encircles secondary bobbin equidistant range, secondary coil is located secondary heat dissipation through-hole with between the second airflow channel, secondary heat dissipation through-hole presses close to secondary coil's lateral surface sets up.

In some embodiments, one end of the outer frame is fixedly connected with a front end baffle, the other end of the outer frame is fixedly connected with a rear end baffle, the front end baffle is parallel to the first partition plate, the inner frame is located between the front end baffle and the rear end baffle, a front end air opening is formed in the center of the front end baffle, and a rear end air opening is formed in the center of the rear end baffle.

In some embodiments, a front end fan is fixedly connected to a surface of the front end baffle plate close to the rear end baffle plate, an air inlet of the front end fan is connected to the front end air inlet, a rear end fan is fixedly connected to a surface of the rear end baffle plate close to the front end baffle plate, an air outlet of the rear end fan is connected to the rear end air inlet, the front end baffle plate and the rear end baffle plate separate the inner space of the outer frame into a front end cavity, a middle cavity and a rear end cavity, the front end cavity is located on a side of the front end baffle plate far away from the rear end baffle plate, the rear end cavity is located on a side of the rear end baffle plate far away from the front end baffle plate, the middle cavity is located between the front end baffle plate and the rear end baffle plate, the inner frame is located inside the middle cavity, and a front end air hole is formed in an end surface of the outer frame close to one end of the front end cavity, and a rear-end air hole is formed in the end face of one end, close to the rear-end cavity, of the outer framework.

Has the advantages that:

the application provides a heat dissipation formula transformer skeleton, in the course of the work, outer skeleton is fixed on the PCB board, primary coil and secondary coil generate heat after the circular telegram, the vertical setting of outer skeleton, the inside air of outer skeleton heaies up, hot-air rises to the rising and discharges from outer skeleton, inside cold air flowed in the outer skeleton from the lower extreme of outer skeleton, realize the heat exchange of the inside air of outer skeleton, it flows to drive the air in the first airflow channel simultaneously, the realization is forced air-cooled to the secondary coil medial surface, the radiating efficiency of transformer is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a heat dissipation transformer bobbin according to an embodiment of the present disclosure;

fig. 2 is a schematic view of a connection structure of an inner frame and an iron core and a primary coil and a secondary coil in an embodiment of the present application;

FIG. 3 is a schematic structural view of an inner skeleton according to an embodiment of the present application;

fig. 4 is a schematic diagram of a primary coil, a secondary coil, and a core connection structure in an embodiment of the present application;

FIG. 5 is a top view of a heat dissipating transformer bobbin according to an embodiment of the present application;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6;

fig. 8 is a sectional view taken along line C-C of fig. 6.

Reference numerals:

101. an inner skeleton; 102. an outer skeleton; 103. a first air flow passage; 104. a primary bobbin; 105. a secondary bobbin; 106. a second airflow channel; 107. a first separator; 108. a second separator; 109. a first primary heat dissipating through-hole; 110. a second primary heat dissipating through hole; 111. a first secondary heat dissipating through-hole; 112. a second secondary heat dissipating through hole; 113. a front end baffle; 114. a rear end baffle; 115. a front end tuyere; 116. a rear end tuyere; 117. a front end fan; 118. a rear end fan; 119. a front end cavity; 120. a middle cavity; 121. a rear end cavity; 122. a front end air hole; 123. rear end air holes; 124. a primary coil; 125. a secondary coil; 126. an iron core; 127. a primary core bar; 128. a secondary wick.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacted with the second feature or indirectly contacted with the second feature through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the terms "a particular example," "one embodiment," "an example," "some embodiments," "some examples," "some embodiments," or "possible embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1 to 8, in an embodiment of the present application, a heat dissipation type transformer bobbin is provided, which includes an inner bobbin 101 and an outer bobbin 102, the outer bobbin 102 is rectangular cylinder-shaped, the inner bobbin 101 is fixed inside the outer bobbin 102, a primary coil 124 and a secondary coil 125 are wound on the inner bobbin 101, an iron core 126 is inserted into the inner bobbin 101, a plurality of first air flow channels 103 are provided on the inner bobbin 101, two ends of the first air flow channels 103 respectively extend to two ends of the outer bobbin 102, the first air flow channels 103 are located inside the primary coil 124, the first air flow channels 103 are arranged in a direction parallel to a central axis of the primary coil 124, the first air flow channels 103 penetrate through two ends of the inner bobbin 101, and an inner side surface of the primary coil 124 is partially exposed in the first air flow channels 103.

The heat dissipation formula transformer skeleton that this embodiment provided, in the course of the work, outer skeleton 102 is fixed on the PCB board, primary 124 and secondary 125 generate heat after the circular telegram, outer skeleton 102 is vertical to be set up, the inside air of outer skeleton 102 heaies up, hot-air rises upwards and is discharged from outer skeleton 102, inside cold air flowed into outer skeleton 102 from the lower extreme of outer skeleton 102, realize the heat exchange of the inside air of outer skeleton 102, drive the air flow in the first airflow channel 103 simultaneously, the realization is forced air cooling to secondary 125 medial surface, improve the radiating efficiency of transformer.

In some embodiments, the inner bobbin 101 includes a primary bobbin 104, the first air flow passages 103 are disposed on an outer side of the primary bobbin 104, the first air flow passages 103 are arranged at equal intervals around the primary bobbin 104, the first air flow passages 103 penetrate both ends of the primary bobbin 104 in a central axis direction of the primary bobbin 104, the primary coil 124 is wound on the primary bobbin 104, and the primary core 127 of the iron core 126 is inserted into the primary bobbin 104.

In some embodiments, the first air flow channel 103 penetrates the primary bobbin 104 in a direction perpendicular to an outer side of the primary bobbin 104, and the outer side of the primary wick 127 is partially exposed in the first air flow channel 103.

Through the above embodiment of the present embodiment, in the process of the airflow flowing through the first airflow channel 103, the inner side surface of the primary coil 124 and the outer side surface of the primary core bar 127 can be simultaneously air-cooled, so as to improve the heat dissipation efficiency of the primary coil 124 and the primary core bar 127, because the primary core bar 127 is made of an iron material, the primary core bar 127 has good heat conductivity, the heat dissipation of the primary core bar 127 is fast, the heat dissipation of the secondary core bar 128 is slow, and partial heat of the secondary core bar 128 is conducted to the primary core bar 127, thereby improving the overall heat dissipation efficiency of the iron core 126, further reducing the heat conducted from the iron core 126 to the primary coil 124, and further reducing the influence of the heat on the working performance of the primary coil 124.

In some embodiments, the inner frame 101 further includes a secondary bobbin 105, a plurality of second airflow channels 106 are disposed on an outer side of the secondary bobbin 105, the second airflow channels 106 are arranged at equal intervals around the secondary bobbin 105, the secondary coil 125 is wound on the secondary bobbin 105, the secondary bobbin 105 is disposed side by side with the primary bobbin 104, a secondary core 128 of the iron core 126 is inserted into the secondary bobbin 105, an inner side of the secondary coil 125 is partially exposed in the second airflow channels 106, two ends of the second airflow channel 106 respectively extend to two ends of the outer frame 102, the second airflow channels 106 are disposed along a direction parallel to a central axis of the secondary coil 125, and the second airflow channels 106 extend through two ends of the secondary bobbin 105.

In some embodiments, the second airflow channel 106 penetrates the secondary bobbin 105 in a direction perpendicular to an outer side surface of the secondary bobbin 105, and the outer side surface of the secondary wick 128 is partially exposed in the second airflow channel 106.

Through the above embodiment of this embodiment, in the process of the airflow flowing through the second airflow channel 106, the inner side surface of the secondary coil 125 and the outer side surface of the secondary core 128 can be simultaneously air-cooled, so as to improve the heat dissipation efficiency of the secondary coil 125 and the secondary core 128, and the first airflow channel 103 and the second airflow channel 106 operate simultaneously to air-cool the secondary coil 125, and the iron core 126 as a whole, so as to improve the heat dissipation efficiency of the whole.

In some embodiments, the inner frame 101 further includes a first partition 107, the first partition 107 is perpendicular to the central axis of the primary bobbin 104, one end of the primary bobbin 104 is fixedly connected to the first partition 107, one end of the secondary bobbin 105 is fixedly connected to the first partition 107, the primary bobbin 104 and the secondary bobbin 105 are located on the same side of the first partition 107, the inner hole of the primary bobbin 104 penetrates through the first partition 107, the inner hole of the secondary bobbin 105 penetrates through the first partition 107, the first air flow channel 103 penetrates through the first partition 107, the second air flow channel 106 penetrates through the first partition 107, and the outer edge of the first partition 107 is fixedly connected to the inner side of the outer frame 102.

In some embodiments, the inner frame 101 further includes a second partition 108, the second partition 108 is parallel to the first partition 107, the primary bobbin 104 and the secondary bobbin 105 are located between the first partition 107 and the second partition 108, an end of the primary bobbin 104 away from the first partition 107 is fixedly connected to the second partition 108, an end of the secondary bobbin 105 away from the first partition 107 is fixedly connected to the second partition 108, an inner hole of the secondary bobbin 105 penetrates through the second partition 108, the first air flow channel 103 penetrates through the second partition 108, the second air flow channel 106 penetrates through the second partition 108, and an outer edge of the second partition 108 is fixedly connected to an inner side surface of the outer frame 102.

In some embodiments, the first partition 107 is provided with a plurality of first primary heat dissipating through holes 109, the first primary heat dissipating through holes 109 are arranged around the primary bobbin 104 at equal intervals, the primary coil 124 is located between the first primary heat dissipating through holes 109 and the first air flow channel 103, and the first primary heat dissipating through holes 109 are arranged close to the outer side of the primary coil 124;

the second partition 108 is provided with a plurality of second primary heat dissipation through holes 110, the second primary heat dissipation through holes 110 are arranged around the secondary winding drum 105 at equal intervals, the primary coil 124 is positioned between the second primary heat dissipation through holes 110 and the first air flow channel 103, and the second primary heat dissipation through holes 110 are arranged close to the outer side surface of the primary coil 124;

a plurality of first secondary heat dissipation through holes 111 are formed in the first partition plate 107, the first secondary heat dissipation through holes 111 are arranged around the primary winding drum 104 at equal intervals, the secondary coil 125 is located between the first secondary heat dissipation through holes 111 and the second airflow channel 106, and the first secondary heat dissipation through holes 111 are arranged close to the outer side face of the secondary coil 125;

the second partition 108 is provided with a plurality of second secondary heat dissipating through holes 112, the second secondary heat dissipating through holes 112 are arranged around the secondary bobbin 105 at equal intervals, the secondary coil 125 is located between the second secondary heat dissipating through holes 112 and the second airflow channel 106, and the second secondary heat dissipating through holes 112 are arranged close to the outer side surface of the secondary coil 125.

In some embodiments, a front baffle 113 is fixedly connected to one end of the outer frame 102, a rear baffle 114 is fixedly connected to the other end of the outer frame 102, the front baffle 113 is parallel to the rear baffle 114, the front baffle 113 is parallel to the first partition 107, the inner frame 101 is located between the front baffle 113 and the rear baffle 114, a front tuyere 115 is disposed in the center of the front baffle 113, and a rear tuyere 116 is disposed in the center of the rear baffle 114.

In some embodiments, a front fan 117 is fixedly connected to a surface of the front baffle 113 close to the rear baffle 114, an air inlet of the front fan 117 is connected to the front air inlet 115, a rear fan 118 is fixedly connected to a surface of the rear baffle 114 close to the front baffle 113, an air outlet of the rear fan 118 is connected to the rear air inlet 116, the front baffle 113 and the rear baffle 114 divide the inner space of the exoskeleton 102 into a front cavity 119, middle part cavity 120 and rear end cavity 121, front end cavity 119 is located the one side that rear end baffle 114 was kept away from to front end baffle 113, rear end cavity 121 is located the one side that front end baffle 113 was kept away from to rear end baffle 114, middle part cavity 120 is located between front end baffle 113 and the rear end baffle 114, inner frame 101 is located inside middle part cavity 120, be equipped with front end bleeder vent 122 on the terminal surface of the one end that outer skeleton 102 is close to front end cavity 119, be equipped with rear end bleeder vent 123 on the terminal surface of the one end that outer skeleton 102 is close to rear end cavity 121.

In the heat dissipation type transformer framework provided by the embodiment, electric fans are adopted as the front end fan 117 and the rear end fan 118, and in the working process of the front end fan 117 and the rear end fan 118, the exchange efficiency of hot air inside the outer framework 102 and cold air outside the outer framework 102 is improved, the outer side surface of the primary coil 124, the inner side surface of the primary coil 124, the outer side surface of the primary core strip 127, the outer side surface of the secondary coil 125, the inner side surface of the secondary coil 125 and the outer side surface of the secondary core strip 128 can be subjected to air cooling of air flow, the directionality of the air flow is good, the retention of the hot air can be reduced, the cooling effect is improved, the heat dissipation efficiency of the transformer is improved, when two ends of the outer framework 102 are shielded, the air flow can pass through the front end air holes 122 and the rear end air holes 123, so that two ends of the outer framework 102 can abut against an electric appliance shell and a PCB (printed circuit board), and the installation structure can be more compact.

The above examples are only for explaining the present application and are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments of the present application without inventive contribution as needed after reading the present specification, but are protected by patent laws within the scope of the claims of the present application.

Claims

1. The heat dissipation type transformer framework is characterized by comprising an inner framework and an outer framework, wherein the outer framework is in a rectangular cylinder shape, the inner framework is fixed inside the outer framework, a primary coil and a secondary coil are wound on the inner framework, an iron core is inserted into the inner framework, a plurality of first air flow channels are arranged on the inner framework, two ends of each first air flow channel extend to two ends of the outer framework respectively, the first air flow channels are located on the inner side of the primary coil and arranged in a direction parallel to the central axis of the primary coil, the first air flow channels penetrate through two ends of the inner framework, and the inner side face of the primary coil is partially exposed in the first air flow channels.

2. The heat dissipating transformer bobbin as claimed in claim 1, wherein the inner bobbin includes a primary bobbin, the first air flow passages are provided on an outer side of the primary bobbin, the first air flow passages are arranged around the primary bobbin at equal intervals, the first air flow passages penetrate both ends of the primary bobbin in a central axis direction of the primary bobbin, the primary coil is wound on the primary bobbin, and the primary bar of the iron core is inserted into the primary bobbin.

3. The heat dissipating transformer bobbin of claim 2, wherein the first air flow channel extends through the primary bobbin in a direction perpendicular to an outer side of the primary bobbin, the outer side of the primary core bar being partially exposed in the first air flow channel.

4. The heat dissipating transformer bobbin of claim 3, wherein the inner bobbin further comprises a secondary bobbin, a plurality of second airflow channels are disposed on an outer side of the secondary bobbin, the second airflow channels are arranged around the secondary bobbin at equal intervals, a secondary coil is wound on the secondary bobbin, the secondary bobbin is arranged side by side with the primary bobbin, a secondary core bar of the iron core is inserted into the secondary bobbin, an inner side surface of the secondary coil is partially exposed in the second airflow channels, two ends of the second airflow channels extend to two ends of the outer bobbin, the second airflow channels are disposed in a direction parallel to a central axis of the secondary coil, and the second airflow channels penetrate through two ends of the secondary bobbin.

5. The heat dissipating transformer bobbin of claim 4, wherein the second airflow channel extends through the secondary bobbin in a direction perpendicular to an outer side of the secondary bobbin, the outer side of the secondary bar being partially exposed in the second airflow channel.

6. The heat dissipating transformer bobbin of claim 5, wherein the inner bobbin further comprises a first partition plate perpendicular to the central axis of the primary bobbin, one end of the primary bobbin is fixedly connected to the first partition plate, one end of the secondary bobbin is fixedly connected to the first partition plate, the primary bobbin and the secondary bobbin are located on the same side of the first partition plate, the inner hole of the primary bobbin penetrates through the first partition plate, the inner hole of the secondary bobbin penetrates through the first partition plate, the first air flow channel penetrates through the first partition plate, the second air flow channel penetrates through the first partition plate, and the outer edge of the first partition plate is fixedly connected to the inner side of the outer bobbin.

7. The heat dissipation transformer bobbin as recited in claims 1 to 6, wherein the inner bobbin further comprises a second partition plate, the second partition plate is parallel to the first partition plate, the primary bobbin and the secondary bobbin are located between the first partition plate and the second partition plate, one end of the primary bobbin far away from the first partition plate is fixedly connected to the second partition plate, one end of the secondary bobbin far away from the first partition plate is fixedly connected to the second partition plate, an inner hole of the secondary bobbin passes through the second partition plate, the first air flow channel passes through the second partition plate, the second air flow channel passes through the second partition plate, and an outer edge of the second partition plate is fixedly connected to an inner side of the outer bobbin.

8. The heat dissipating transformer bobbin of claim 7, wherein the first partition has a plurality of first primary heat dissipating through holes arranged at equal intervals around the primary winding bobbin, the primary winding is disposed between the first primary heat dissipating through holes and the first air flow channel, and the first primary heat dissipating through holes are disposed adjacent to an outer side of the primary winding;

be equipped with a plurality of secondary heat dissipation through-hole on the second baffle, secondary heat dissipation through-hole encircles the equidistant range of secondary bobbin, secondary coil is located secondary heat dissipation through-hole with between the second airflow channel, secondary heat dissipation through-hole presses close to secondary coil's lateral surface sets up.

9. The heat dissipation type transformer framework of claim 8, wherein one end of the outer framework is fixedly connected with a front end baffle, the other end of the outer framework is fixedly connected with a rear end baffle, the front end baffle is parallel to the first partition, the inner framework is located between the front end baffle and the rear end baffle, a front end air opening is formed in the center of the front end baffle, and a rear end air opening is formed in the center of the rear end baffle.

10. The heat dissipation transformer bobbin as recited in claim 9, wherein a front fan is fixedly connected to a surface of the front baffle plate close to the rear baffle plate, an air inlet of the front fan is connected to the front air inlet, a rear fan is fixedly connected to a surface of the rear baffle plate close to the front baffle plate, an air outlet of the rear fan is connected to the rear air inlet, the front baffle plate and the rear baffle plate separate an inner space of the outer bobbin into a front cavity, a middle cavity and a rear cavity, the front cavity is located at a side of the front baffle plate away from the rear baffle plate, the rear cavity is located at a side of the rear baffle plate away from the front baffle plate, the middle cavity is located between the front baffle plate and the rear baffle plate, the inner bobbin is located inside the middle cavity, front air holes are formed in an end surface of the outer bobbin close to a side of the front cavity, and a rear-end air hole is formed in the end face of one end, close to the rear-end cavity, of the outer framework.