TWI543501B - Integrated power converting device - Google Patents

Description

Integrated power conversion module

The invention relates to a power conversion module, in particular to an integrated power conversion module.

Almost all electronic devices require the use of a power source, which can be said to be the heart of an electronic device, directly affecting the performance of the electronic device.

Due to the rise of energy saving, carbon saving and embracing consciousness, the requirements for power supply are getting higher and higher, high efficiency, light and thin, and low cost are the goals that power supply design should pursue. In order to meet these requirements, research on power technology is necessary.

The transformers and electronic components of a conventional power converter are independently disposed on a circuit board and electrically connected through circuit wiring formed on the circuit board. However, such a configuration occupies a large amount of space on the board and becomes the main cause of the miniaturization of the overall size of the high-power power conversion system.

In view of the prior art, one of the aims of the present invention is to provide an integrated power supply module that is characterized by high efficiency, lightness, thinness, and the like.

One of the technical aspects of this creation is to provide an integrated power conversion module that is electrically connected to a DC power source. The integrated power conversion module comprises a bobbin, a plurality of primary windings, a core group and a plurality of power conversion units. The bobbin includes a body, a plurality of winding portions and a plurality of receiving portions. The main body has a first through passage, and the receiving portion and the winding portion are alternately arranged on the body. Each of the receiving portions has a slot, and the slot is connected to the first through passage. The primary windings are respectively wound around the winding portion, and the magnetic core group is sleeved outside the winding frame and partially disposed on the first through passage.

The power conversion unit is arranged in parallel, and each power conversion unit comprises a circuit board, A rectifier and a filter. The circuit board has a base portion and an extension portion connected to the base portion. The extension portion is formed with a constant hole. The extension portion is inserted into the slot, and the through hole corresponds to and communicates with the through passage. The rectifier is disposed on one side of the base and electrically connected to the conductive sheet; the filter is disposed on the other side of the base, and the filter is electrically connected to the rectifier with respect to the rectifier.

When the primary winding of the integrated power conversion module is electrically connected to the DC power source, the magnetic core group generates electromagnetic induction to generate conversion power on the conductive sheet of the power conversion unit.

10‧‧‧ Winding frame

100‧‧‧ body

101‧‧‧First through passage

102‧‧‧Winding Department

104a~104d‧‧‧ Housing Department

105‧‧‧Bumps

106‧‧‧Slots

108‧‧‧ spacers

109‧‧‧Second through passage

110‧‧‧ side wall

12‧‧‧Electrical terminals

13‧‧‧Fixed parts

20‧‧‧Primary winding

30‧‧‧Magnetic core group

31‧‧‧ Air gap

300‧‧‧中柱

302, 304‧‧‧ side column

40‧‧‧Power Conversion Module

41a, 41b, 41c, 41d‧‧‧ electrical energy conversion unit

42‧‧‧ boards

420‧‧‧ base

422‧‧‧Extension

424‧‧‧through holes

426‧‧‧ feet

43‧‧‧Conductor

430‧‧ ‧ gap

44‧‧‧Rectifier

46‧‧‧ filter

48‧‧‧ Conductive plate

5‧‧‧Transformers

50‧‧‧ gas passage

FIG. 1 is a circuit diagram of the integrated power conversion module of the present invention.

2 is an exploded perspective view of the integrated power conversion module of the present invention.

FIG. 3 is a partial combination diagram of the integrated power conversion module of the present invention.

FIG. 4 is a combination diagram of the integrated power conversion module of the present invention.

FIG. 5 is a combination diagram of the line 5-5 along FIG. 3.

Figure 6 is a combination diagram of the line 6-6 along Figure 3.

The above and other objects, features and advantages of the present disclosure will be better understood from the following description and appended claims.

Referring to Figure 1, the circuit diagram of the integrated power conversion module of the present invention. The integrated power conversion module of the present invention has the functions of changing voltage level, rectifying and filtering. The integrated power conversion module includes a transformer 5, and the secondary side of the transformer 5 is electrically connected to the rectifier 44 and the filter 46. The rectifier 44 is configured to convert the AC power output of the secondary side of the transformer 5 (after being converted by electric energy) into a pulsating DC power source, and the filter 46 is used for filtering the pulsating component in the pulsating DC power source, thereby integrating the power conversion mode. The group can output a flat DC power supply.

With reference to Figure 2 and Figure 3, respectively, the three-dimensional exploded view and combination diagram of the integrated power conversion module of the present invention. The integrated power conversion module of the present invention comprises a bobbin 10, at least one primary winding 20, a core group 30 and a plurality of power conversion units 41a~41d.

The bobbin 10 includes a main body 100, a plurality of winding portions 102, and a plurality of receiving portions 104a to 104d. The body 100 has a first through passage 101. The winding portion 102 and the accommodating portions 104a to 104d are correspondingly arranged in a staggered manner on the main body 100, and the accommodating portions 104a to 104d are arranged in parallel with each other.

A second through passage 109 is formed on the body 100 to communicate with the first through passage 101 and substantially perpendicular to the first through passage 101.

In the present invention, the bobbin 10 includes four receiving portions 104a-104d respectively disposed on opposite sides of the second through-passage 109, wherein the receiving portions 104a and 104b are located on one side of the second through-passage 109, and are received. The portions 104c and 104d are located on the other side of the second through passage 109. The winding portions 102 are also respectively disposed on both sides of the second through passage 109, and are alternately arranged with the accommodating portions 104a to 104d.

The accommodating portions 104a to 104d are formed with a slot 106 adjacent to one side of the power converting units 41a to 41b, and the slot 106 communicates with the first through passage 101. The accommodating portions 104a to 104d have a side wall 110 on a side away from one of the electric energy conversion units 41a to 41b. As shown in FIG. 3, the side wall 110 closes the slot 106.

The bottom ends of the two sides of the accommodating portions 104a to 104d respectively extend downward to form a bump 105. The extending direction of the bump 105 is substantially perpendicular to the opening direction of the slot 106. The accommodating portions 104a to 104d are respectively connected with the plurality of conductive terminals 12 on the bumps 105 on the side away from the power converting units 41a to 41d, and the accommodating portions 104a to 104d are respectively connected to the bumps 105 on the side adjacent to the power converting units 41a to 41d. There are a plurality of fixing members 13.

The primary winding 20 is electrically connected to the conductive terminal 12, and is wound around the winding portion 102 in an S-shaped winding manner starting from one of the conductive terminals 12, and the other conductive terminal 12 is used as an end point, as shown in FIG. Show. The primary winding 20 is the primary winding of the integrated power conversion module.

The main body 100 further includes a plurality of spacers 108 disposed between the second through passage 109 and the two receiving portions 104b and 104c adjacent to the second through passage 109 for partitioning the second through passage 109 and the receiving portions 104b and 104c. .

The core group 30 is sleeved outside the bobbin 10 and partially penetrates the first through passage 101. The core group 30 can be composed of two E-shaped cores, each of which contains a core a center pillar 300, and side pillars 302 and 304 located on opposite sides of the center pillar 300 and connected to the center pillar 300. The side pillars 302 and 304 are respectively located on the upper side and the lower side of the bobbin 10, and the two side pillars abut each other. Pick up. When the core group 30 is sleeved outside the bobbin 10, the center pillar 300 is disposed in the through passage 101, and an air gap 31 is formed between the two center pillars 300. The air gap 31 is formed in the second through passage 109, such as As shown in Figure 5, the effect of energy storage is achieved. It is to be noted here that the primary winding 20 is not wound around the body 100 forming the second through passage 109, and since the primary winding 20 avoids the relationship of the air gap 31, the eddy current loss can be effectively reduced.

Furthermore, when the core group 30 is sleeved on the bobbin 10, there is a side pillar 302, 304 of each E-shaped core and the body 100, and a primary winding 20 wound around the winding portion 102. The gas passage 50 allows gas to circulate therebetween to provide a good heat dissipation effect.

The power conversion units 41a to 41b are arranged in parallel. Each of the electrical conversion units 41a to 41d includes a circuit board 42, a rectifier 44, and a filter 46.

The circuit board 42 includes a base portion 420 and an extension portion 422 connected to the base portion 420. The base portion 420 and the extension portion 422 are pre-formed with a copper foil line (not shown) for the conductive sheet 43, the rectifier 44 and the filter 46. Form an electrical connection. The outer shape of the base 420 is substantially rectangular, and the bottom edge of the base 420 is provided with a plurality of pins 426.

The extension 422 has a uniform aperture 424 that is annular in shape and the outer shape of the copper foil line formed on the extension 422 can be substantially annular and can transfer current to the rectifier 44. The outer shape of the extending portion 422 corresponds to the outer shape of the receiving portions 104a to 104d. When the extending portion 422 is inserted into the slot 106, the through hole 424 corresponds to and communicates with the first through passage 101.

Each of the power conversion units 41a to 41d may further include a conductive sheet 43 disposed on the extension portion 423 and attached to the copper foil line of the extension portion 42. The conductive sheet 43 has a shape substantially corresponding to the extending portion and has a notch 430 such that its outer shape is substantially C-shaped. The conductive sheet 43 can be made, for example, but not limited to, using a tinned copper sheet to provide good electrical and thermal conductivity, and the conductive sheet 43 serves as a current conducting path.

In the integrated power conversion module of the present creation, the primary winding is wound around the winding portion 102. The winding 20, the core group 30 sleeved on the bobbin 10, and the extending portion 422 and the conductive piece 43 inserted in the slot 106 of the bobbin 10 cooperate to form the transformer 5 shown in FIG.

The rectifier 44 is disposed on one side of the base 420 of the circuit board 42, and the filter 46 is disposed on the other side of the base 420 of the circuit board 42. The rectifier 44 can be, for example, a synchronous rectification circuit composed of four metal oxide semiconductor field effect transistors, wherein the synchronous rectification circuit can effectively reduce rectification loss. The power conversion units 41a to 41d further include a conductive plate 48 disposed on the base 420 and on the same side as the rectifier 44. Filter 46 can be, for example, an inductor.

Further, the circuit board 42 of the power conversion unit 41b is provided with a surface of one of the filters 46 facing the power conversion unit 41c, and one surface of the filter 46 is provided; in other words, on the opposite sides of the winding portion 102 and nearest to each other The filters 46 of the two power conversion units 41b and 41c of the winding portion 102 face each other, and the lengths of the two filters 46 are substantially equal to the length of the winding portion 102.

Further, the circuit board 42 of the power conversion unit 41a is provided with a surface of one of the rectifiers 44 facing the power conversion unit 41b, and a surface of the rectifier 44 is provided; in other words, adjacent to either side of the winding portion 102. The rectifiers 44 of the power conversion units 41a and 41b (or 41c and 41d) are disposed facing each other; thereby, the integrated power conversion module can be brought into a compact configuration, thereby effectively reducing the overall volume.

The integrated power conversion module of the present invention can be miniaturized by the circuit configuration of FIG. 1 and the structure configuration shown in FIG. 2 to FIG. 6, and the eddy current loss and the switching loss can be effectively reduced.

The integrated power conversion module can be set up on a power supply board; in other words, the power supply board is placed at the bottom of the integrated power conversion module. The fixing member 13 is configured to support the integrated power conversion module on the power supply board to prevent the integrated power conversion module from being tilted due to the weight of the power conversion unit. Specifically, if the conductive terminal 12 is disposed on the bobbin 10, the conductive terminal 12 may be disposed at the bottom end of the accommodating portions 104a to 104d, the primary winding 20 is connected to the conductive terminal 12, and the conductive terminal is transmitted through the conductive terminal. 12 is electrically connected to the power supply main board; the fixing member 13 is disposed at the bottom end of the accommodating portions 104a to 104d not provided with the conductive terminals 12, thereby integrating The power conversion module is supported on the power supply board. If the primary winding 20 wound on the bobbin 10 is directly connected to the power supply main board (that is, connected by a flying wire), the bottom end of the accommodating portions 104a to 104d may be provided with only the fixing member 13. However, the arrangement and the number of the conductive terminals 12 and the fixing members 13 can be adjusted according to actual needs.

The integrated power conversion module of the present invention can output a plurality of sets of DC power sources, and the secondary coils (the copper foil lines or the conductive sheets 43 formed on the extension portion 422), the rectifier 44 and the filter 46 are integrated on the circuit board 42. And combined with the bobbin 10 by means of plugging, thus having the characteristics of simple process and small volume.

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention should still be covered by the patent of the present invention. The scope of the scope is intended to protect.

10‧‧‧ Winding frame

100‧‧‧ body

101‧‧‧First through passage

102‧‧‧Winding Department

104a, 104b, 104c, 104d‧‧‧

105‧‧‧Bumps

106‧‧‧Slots

108‧‧‧ spacers

109‧‧‧Second through passage

110‧‧‧ side wall

12‧‧‧Electrical terminals

13‧‧‧Fixed parts

30‧‧‧Magnetic core group

300‧‧‧中柱

302, 304‧‧‧ side column

41a, 41b, 41c, 41d‧‧‧ electrical energy conversion unit

42‧‧‧ boards

420‧‧‧ base

422‧‧‧Extension

424‧‧‧through holes

426‧‧‧ feet

43‧‧‧Conductor

430‧‧ ‧ gap

44‧‧‧Rectifier

46‧‧‧ filter

48‧‧‧ Conductive plate

Claims (10)

An integrated power conversion module is electrically connected to a DC power supply. The integrated power conversion module comprises: a winding frame, comprising a body, a plurality of winding portions and a plurality of receiving portions, the body having a first through passage, The winding portion and the receiving portion are staggered on the body, each of the receiving portions has a slot, the slot is connected to the first through passage; at least one primary winding is wound around the winding portion; a magnetic core set, disposed outside the winding frame, and partially disposed in the first through passage; the plurality of electric energy conversion units are arranged in parallel, each of the electric energy conversion units comprising: a circuit board having a base and An extension portion is connected to the base portion, and the extension portion is formed with a constant hole, the extension portion is inserted into the slot, and the through hole corresponds to the first through passage and communicates with each other; a rectifier is disposed at the a side of the substrate and electrically connected to the circuit board; and a filter disposed on the other side of the base, and opposite to the rectifier, the filter is electrically connected to the rectifier, wherein the primary When the group is electrically connected to the DC power source, the core set of electromagnetic induction, so that the power converter to generate each of the conductive sheet of the energy conversion unit. The integrated power conversion module of claim 1, wherein the body further defines a second through passage substantially perpendicular to the first through passage and communicating with the first through passage, and located at the second through The filters of the two power conversion units on opposite sides of the channel and closest to the second through channel are disposed facing each other. The integrated power conversion module of claim 2, wherein the core group comprises two cores, each of the cores comprises a center pillar, the middle pillars are disposed in the first through passage, and the An air gap is formed between the middle pillars, and the air gap is formed in the second through passage. The magnetic core group forms a plurality of gas passages with the body and the primary winding wound around the winding portions. The integrated power conversion module of claim 2, wherein the number of the winding portions is correspondingly arranged on two sides of the second through passage, and the number of the receiving portions is correspondingly arranged in the second through passage On both sides, the winding portions and the receiving portions are staggered. The integrated power conversion module of claim 4, wherein the rectifiers of the adjacent two power conversion units located on either side of the second through passage are disposed facing each other. The integrated power conversion module of claim 1, wherein each of the power conversion units further comprises a conductive plate disposed at the base and located on the same side as the rectifier. The integrated power conversion module of claim 2, further comprising a plurality of spacers disposed parallel to the receiving portion and disposed between the second through passage and the receiving portions. The integrated power conversion module of claim 1, wherein each of the receiving portions further comprises a side wall disposed on a side of each of the power conversion units and closing the slot. The integrated power conversion module of claim 1, further comprising a plurality of fixing members disposed at the bottom end of the receiving portions. The integrated power conversion module of claim 1, further comprising a conductive sheet attached to the extension.