Housings for insulated converters and insulated converters using them

Abstract

An insulated converter housing and an insulated converter using the same are provided. The insulated converter housing according to an embodiment of the present invention may include a body having a primary side space and a secondary side space. Here, the body may include: a partition wall vertically separating the primary side space and the secondary side space; and an upper wall and a lower wall disposed above and below the partition wall, respectively.

Description

Technical Field

[0001] This invention relates to a housing for an insulated converter and an insulated converter using the same. Background Technology

[0002] Typically, to stably supply control power in high-voltage environments, a DC-DC converter or AC-DC converter is incorporated into an SMPS (Switching Mode Power Supply). A converter (DC-DC or AC-DC converter) is a device that arbitrarily changes the output voltage for an input power supply. Here, the converter has a primary-side input and a secondary-side output.

[0003] Furthermore, converters can be classified into insulated types that provide insulation between input and output voltages and non-insulated types that do not provide this function. Here, the insulation performance of an insulated converter depends on the structure of its housing.

[0004] In an isolated-type SMPS or isolated-type converter, "isolated" refers to a transformer structure internally comprising primary and secondary coils that are magnetically connected but electrically isolated / insulated. Therefore, maintaining electrical insulation between the primary and secondary coils is crucial when high voltage is input.

[0005] On the other hand, insulated converters need to reduce manufacturing costs and be miniaturized for installation and operation. However, existing insulated converters, from the perspective of housing structure, present a problem in simultaneously satisfying insulation performance and minimizing overall size. Summary of the Invention

[0006] The problem to be solved

[0007] The technical problem to be solved by the present invention is to provide an insulating converter housing that maintains insulation performance and minimizes overall size, and an insulating converter using the same.

[0008] Technical solutions to the problem

[0009] To address the technical challenges described above, an embodiment of the present invention provides an insulating converter housing that may include a main body having a primary side space and a secondary side space. Here, the main body may include: a partition wall that vertically separates the primary side space and the secondary side space; and an upper wall and a lower wall disposed above and below the partition wall, respectively.

[0010] In one embodiment of the present invention, the partition wall may be disposed in the center of the main body.

[0011] An embodiment of the insulating converter housing of the present invention may further include side plates disposed on both sides of the main body.

[0012] An embodiment of the insulating converter housing of the present invention may further include input / output terminals disposed on the outside of the side plate.

[0013] In one embodiment of the present invention, the primary side space and the secondary side space may be defined by the upper wall, the lower wall and the partition wall.

[0014] An embodiment of the insulating converter housing of the present invention may further include a first stepped portion, wherein the first stepped portion is configured from the partition wall to form a step with the upper wall and the lower wall in each of the primary side space and the secondary side space.

[0015] An embodiment of the insulating converter housing of the present invention may further include a second stepped portion, which is disposed in each of the primary side space and the secondary side space from the first stepped portion toward the opposite side of the partition wall and has a groove in the center.

[0016] In one embodiment of the present invention, the longitudinal length of the main body of the insulating converter housing can be greater than the transverse length in order to minimize the area of ​​the bottom surface opposite to the mounting surface.

[0017] In addition, in order to solve the technical problems described above, an embodiment of the present invention of an insulated converter may include: the housing as described above; a primary side core and a primary side PCB disposed in the primary side space; and a secondary side core and a secondary side PCB disposed in the secondary side space.

[0018] In one embodiment of the present invention, the primary side core and the secondary side core may be configured on the partition wall side.

[0019] In one embodiment of the present invention, the primary-side PCB may be configured on the opposite side of the primary-side core, and the secondary-side PCB may be configured on the opposite side of the secondary-side core.

[0020] In one embodiment of the present invention, an elastic pressure section may be included, which maintains the gap between the primary side core and the secondary side core.

[0021] Technical effect

[0022] According to the present invention as described above, a partition wall is provided to divide the primary side space and the secondary side space. An upper wall and a lower wall are provided on the upper and lower sides of the partition wall, thereby maximizing the creepage distance in the case of a housing of the same specifications. Therefore, it has the effect of not only maintaining insulation performance but also minimizing the overall size.

[0023] Furthermore, according to the present invention, the housing is configured to maximize the creepage distance under the same housing specifications, thereby enabling miniaturization of the housing and the insulated converter using the housing, thus having the effect of reducing manufacturing costs. Attached Figure Description

[0024] Figure 1 This is a perspective view of an insulated converter according to an embodiment of the present invention.

[0025] Figure 2 This is a cross-sectional view of an insulated converter according to an embodiment of the present invention.

[0026] Figure 3 This is a cross-sectional perspective view of an insulated converter housing according to an embodiment of the present invention.

[0027] Figure 4 This is a perspective view of an insulated converter housing according to an embodiment of the present invention.

[0028] Figure 5 This is an example diagram illustrating the creepage distance of the housing of an insulated converter according to an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures

[0030] 10: Insulated type converter 11: First converter

[0031] 12: Second converter 100: Housing for insulated converter

[0032] 110: Main Body 111: Primary Side Space

[0033] 112: Separator 113: Secondary side space

[0034] 114: Upper wall 114a, 116a: First step

[0035] 114b, 116b: Second step section; 114c, 116c: Groove section

[0036] 115a, 117a: First fastening groove; 115b, 117b: Second fastening groove

[0037] 115c, 117c: Third fastening groove; 116: Lower wall

[0038] 120: Side panel; 130: Input / output terminals Detailed Implementation

[0039] To fully understand the structure and effects of the present invention, preferred embodiments will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but can be implemented in various forms and with various modifications. The description of these embodiments is intended to provide a complete disclosure of the invention and to fully disclose the scope of the invention to those skilled in the art. In the drawings, for ease of illustration, the dimensions of the constituent elements are enlarged, and the proportions of the various constituent elements may be exaggerated or reduced.

[0040] The terms "first," "second," etc., can be used to describe various constituent elements, but these constituent elements should not be limited to the terms used above. The terms used above may only be used to distinguish one constituent element from another. For example, without departing from the scope of the invention, "first constituent element" may be named "second constituent element," and similarly, "second constituent element" may be named "first constituent element." Furthermore, unless the context clearly specifies otherwise, singular expressions include plural expressions. Unless otherwise defined, the terms used in the embodiments of the invention may be interpreted in the sense that are well-known to those skilled in the art.

[0041] Hereinafter, an embodiment of the insulating converter and the housing for the insulating converter according to the present invention will be described with reference to the accompanying drawings.

[0042] Figure 1 This is a perspective view of an isolated converter according to an embodiment of the present invention. Figure 2 This is a cross-sectional view of an insulated converter according to an embodiment of the present invention.

[0043] like Figure 1 and Figure 2 As shown, an insulated converter 10 according to an embodiment of the present invention may include an insulated converter housing 100, a primary side core 11, a secondary side core 12, a primary side PCB 13, and a secondary side PCB 14.

[0044] In particular, the main body 110 of the housing 100 for the insulated converter is formed in a cuboid shape with a longitudinal length greater than its transverse length. The shape of the main body 110 as described above is more conducive to insulation.

[0045] If the horizontal length is greater than the vertical length, the area of ​​the lower surface of the SMPS relative to the fixed bottom surface becomes wider, and the support platform can only become larger, which is not conducive to insulation.

[0046] The housing 100 for the insulated converter is used to house the primary side core 11, secondary side core 12, primary side PCB 13, and secondary side PCB 14, which are the main components of the insulated converter 10. It may include a main body 110, a side plate 120, and input / output terminals 130. Here, the housing 100 for the insulated converter is not limited to use in insulated converters, but can also be applied to power semiconductor transformers.

[0047] Additionally, it may include elastic pressure portions 15 and 16 for fixing, so as to maintain the magnetic force of the primary side core 11 and the secondary side core 12.

[0048] The main body 110 can be formed in a shape that is divided into two parts. As an example, the main body 110 can be formed as a rectangle.

[0049] The main body 110 may include: a primary side space 111 for accommodating the primary side core 11 and the primary side PCB 13; and a secondary side space 113 for accommodating the secondary side core 12 and the secondary side PCB 14. In the accompanying drawings, the space to the left of the partition wall 112 may be the primary side space 111, while the space to the right of the partition wall 112 may be the secondary side space 113.

[0050] like Figure 2 As shown, a partition wall 112 may be provided inside the main body 110, which vertically divides the primary side space 111 and the secondary side space 113. That is, the primary side space 111 and the secondary side space 113 can be divided by the partition wall 112 provided inside the main body 110.

[0051] In addition, the main body 110 may include: an upper wall 114 disposed on the upper side of the partition wall 112; and a lower wall 116 disposed on the lower side of the partition wall 112.

[0052] Side panels 120 can be provided on both sides of the main body 110. Side panels 120 can be configured as primary side spaces 111 and secondary side spaces 113 that are sealed within the main body 110 and separated by partition walls 112.

[0053] The input / output terminals 130 can be located on the outside of the side plate 120. As an example, in the accompanying drawings, the left side of the main body 110 can be an input terminal, and the right side of the main body 110 can be an output terminal. That is, the input terminal can be located on the primary side of the insulated converter 10, and the output terminal can be located on the secondary side of the insulated converter 10.

[0054] The primary side core 11 can be disposed in the primary side space 111 of the housing 100 for the insulated converter. Here, the primary side core 11 can be disposed in the primary side space 111 on the side of the partition wall 112.

[0055] The secondary core 12 can be disposed in the secondary side space 113 of the housing 100 for the insulated converter. Here, the secondary core 12 can be disposed in the secondary side space 113 on the side of the partition wall 112.

[0056] like Figure 2 As shown, the primary side core 11 and the secondary side core 12 can be configured to be opposite each other with a partition wall 112 between them.

[0057] A primary coil 17 is wound around the primary side core 11, and a secondary coil 18 is wound around the secondary side core 12. The primary side core 11 and the secondary side core 12 are separated for electrical insulation. This separation distance is the maximum interval that can maintain a specified level of magnetic connection strength.

[0058] Since the magnetic connection strength weakens if the primary side core 11 and the secondary side core 12 are slightly separated due to impact or assembly gaps under the conditions described above, it is necessary to maintain accurate positioning.

[0059] Therefore, the present invention uses elastic pressing portions 15 and 16 to fix the positions of the primary side core 11 and the secondary side core 12, respectively. The primary side elastic pressing portion 15 applies pressure to the primary side core 11 in the direction of the secondary side core 12 to prevent the gap between the primary side core 11 and the secondary side core 12 from increasing in advance. The secondary side elastic pressing portion 16 does the same. Therefore, it is possible to prevent the magnetic connection from weakening due to external impacts or assembly gaps. In addition, since the primary side core 11 and the secondary side core 12 can be separated simply by removing the elastic pressing portions 15 and 16, it is also beneficial for later maintenance.

[0060] The primary-side PCB 13 can be disposed in the primary-side space 111 of the housing 100 for the insulated converter. Here, the primary-side PCB 13 can be disposed on the opposite side of the primary-side core 11 within the primary-side space 111. That is, the primary-side PCB 13 can be disposed on the input / output terminal 130 side. Furthermore, passive components and switching elements constituting the converter circuit can be mounted on the primary-side PCB 13.

[0061] The secondary-side PCB 14 can be disposed in the secondary-side space 113 of the insulated converter housing 100. Here, the secondary-side PCB 14 can be disposed on the opposite side of the secondary-side core 12 within the secondary-side space 113. That is, the secondary-side PCB 14 can be disposed on the input / output terminal 130 side. Furthermore, passive components and switching elements constituting the converter circuit can be mounted on the secondary-side PCB 14.

[0062] The following is for reference Figures 3 to 5 The following is a more detailed description of an embodiment of the insulating converter housing 100 of the present invention.

[0063] Figure 3This is a cross-sectional perspective view of an insulated converter housing according to an embodiment of the present invention. Figure 4 This is a perspective view of an insulated converter housing according to an embodiment of the present invention.

[0064] As shown in the figure, the partition wall 112 that divides the primary side space 111 and the secondary side space 113 can be set in the center of the main body 110. That is, the main body 110 can be formed into a structure that is symmetrical about the partition wall 112.

[0065] It should be understood that the description of the primary side space 111 in the accompanying drawings and the following description can also be applied to the secondary side space 113.

[0066] like Figure 3 As shown, the primary side space 111 and the secondary side space 113 can be defined by the upper wall 114, the partition wall 112, and the lower wall 116. That is, as Figure 4 As shown, the housing 100 for the insulated converter has a structure with open sides, and a primary side space 111 and a secondary side space 113 can be provided on both sides with the partition wall 112 as the center.

[0067] In each of the primary side space 111 and the secondary side space 113, a first step portion 114a may be provided to form a step with the upper wall 114. Here, the first step portion 114a can form a step from the upper wall 114 inward. That is, the first step portion 114a may have a greater thickness than the upper wall 114.

[0068] Similarly, in each of the primary side space 111 and the secondary side space 113, a first step portion 116a may be provided to form a step with the lower wall 116. Here, the first step portion 116a may be configured to form a step from the lower wall 116 inward. That is, the first step portion 116a may have a greater thickness than the lower wall 116.

[0069] like Figure 2 As shown, in the primary side space 111, the primary side core 11 can be disposed between the first step portion 114a of the upper wall 114 and the first step portion 116a of the lower wall 116. Similarly, in the secondary side space 113, the secondary side core 12 can be disposed between the first step portion 114a of the upper wall 114 and the first step portion 116a of the lower wall 116.

[0070] Here, a first fastening groove 115a may be provided in the first step portion 114a provided on the upper wall 114. The first fastening groove 115a may be disposed in the center of the first step portion 114a on the opposite side of the partition wall 112. That is, the first fastening groove 115a may be exposed to the outside from the groove portion 114c.

[0071] Similarly, a first fastening groove 117a may be provided in the first step portion 116a provided on the lower wall 116. The first fastening groove 117a may be provided in the center of the first step portion 116a on the opposite side of the partition wall 112. That is, the first fastening groove 117a may be exposed to the outside from the groove portion 116c.

[0072] like Figure 2 As shown, with the primary side core 11 disposed in the primary side space 111 between the first step portion 114a of the upper wall 114 and the first step portion 116a of the lower wall 116, the primary side core 11 can be coupled to the partition wall 112 side within the primary side space 111 by inserting and engaging the first fastening grooves 115a and 117a with fastening screws (not shown).

[0073] Similarly, with the secondary core 12 disposed in the secondary side space 113 between the first step portion 114a of the upper wall 114 and the first step portion 116a of the lower wall 116, the secondary core 12 can be coupled to the partition wall 112 side within the secondary side space 113 by inserting a fastening screw (not shown) into the first fastening grooves 115a and 117a.

[0074] In each of the primary side space 111 and the secondary side space 113, a second step portion 114b may be provided, forming from the first step portion 114a toward the opposite side of the partition wall 112. Here, the second step portion 114b may be formed with the same thickness as the first step portion 114a. Furthermore, the second step portion 114b may have a groove 114c in the center.

[0075] As an example, the second step portion 114b can be configured such that the distance between its end portion and the partition wall 112 is greater than half of the distance between the primary side space 111 or the secondary side space 113. That is, the end portion of the second step portion 114b can be configured in each of the primary side space 111 and the secondary side space 113 to be closer to the side plate 120 than the partition wall 112. Here, the end portion refers to the portion where a step is formed between the second step portion 114b and the upper wall 114.

[0076] Similarly, in each of the primary side space 111 and the secondary side space 113, a second step portion 116b may be provided, forming from the first step portion 116a toward the opposite side of the partition wall 112. Here, the second step portion 116b may be formed with the same thickness as the first step portion 116a. Furthermore, the second step portion 116b may have a groove 116c in the center.

[0077] As an example, the second step portion 116a can be configured such that the distance between its end portion and the partition wall 112 is greater than half of the primary side space 111 or the secondary side space 113. That is, the end portion of the second step portion 116b can be configured in each of the primary side space 111 and the secondary side space 113 to be closer to the side plate 120 than the partition wall 112. Here, the end portion refers to the portion where a step is formed between the second step portion 116b and the lower wall 116.

[0078] like Figure 2 As shown, in the primary side space 111, a primary side PCB 13 may be disposed between the end portion of the second step portion 114b of the upper wall 114 and the end portion of the second step portion 116b of the lower wall 116. Similarly, in the secondary side space 113, a secondary side PCB 14 may be disposed between the end portion of the second step portion 114b of the upper wall 114 and the end portion of the second step portion 116b of the lower wall 116.

[0079] Here, a second fastening groove 115b may be provided in the second step portion 114b provided on the upper wall 114. The second fastening groove 115b may be provided on both sides of the second step portion 114b on the opposite side of the partition wall 112. That is, the second fastening groove 115b may be exposed to the outside in the lateral direction of the partition wall 112.

[0080] Similarly, a second fastening groove 117b may be provided in the second step portion 116b provided in the lower wall 116. The second fastening groove 117b may be provided on both sides of the second step portion 116b on the opposite side of the partition wall 112. That is, the second fastening groove 117b may be exposed to the outside in the lateral direction of the partition wall 112.

[0081] like Figure 2 As shown, with the primary side PCB 13 positioned in the primary side space 111 between the end of the second step portion 114b of the upper wall 114 and the end of the second step portion 116b of the lower wall 116, the primary side PCB 13 can be coupled into the primary side space 111 by inserting fastening screws (not shown) into the second fastening slots 115b and 117b.

[0082] Similarly, with the secondary-side PCB 14 disposed in the secondary-side space 113 between the end of the second step portion 114b of the upper wall 114 and the end of the second step portion 116b of the lower wall 116, the secondary-side PCB 14 can be coupled into the secondary-side space 113 by inserting fastening screws (not shown) into the second fastening slots 115b and 117b.

[0083] In addition, third fastening grooves 115c and 117c can be provided on both sides of the main body 110. The third fastening grooves 115c and 117c can be provided near the four corners on both sides of the main body 110.

[0084] like Figure 3 As shown, by inserting fastening screws (not shown) into the third fastening slots 115c and 117c with the side plates 120 disposed on both sides of the main body 110, the side plates 120 can be attached to both sides of the main body 110.

[0085] On the other hand, the insulation distance is determined by specifications related to the insulation performance of the housing 100 for the insulated converter, enabling its application in product design. Here, the insulation distance is divided into through air and creepage distance. Through air refers to the distance between the primary side core 11 and the secondary side core 12 directly opposite each other. Creepage distance is the distance between the primary side core 11 and the secondary side core 12, referring to the shortest distance along the surface of a solid dielectric.

[0086] In the housing 100 for the insulated converter, since the primary side core 11 and the secondary side core 12 are blocked by the partition wall 112, they do not face each other, and therefore no spatial distance is defined. (Refer to...) Figure 5 This provides a more detailed explanation of creepage distance.

[0087] Figure 5 This is an example diagram illustrating the creepage distance of the housing of an insulated converter according to an embodiment of the present invention.

[0088] like Figure 3 As shown, since the primary side core 11 and the secondary side core 12 disposed in the housing 100 for the insulated converter are configured to face each other with the partition wall 112 as the center, the creepage distance can be defined as the distance from the partition wall 112 on the primary side space 111 side to the partition wall 112 on the secondary side space 113 side.

[0089] As an example, the creepage distance L of the housing 100 for the insulated converter is the distance formed by the first step portion 114a, the second step portion 114b, the upper wall 114, and the upper end surface of the main body 110, with the partition wall 112 as the center.

[0090] Similarly, the creepage distance L of the housing 100 for the insulated converter is the distance formed by the first step portion 116a, the second step portion 116b, the lower wall 116, and the lower end face of the main body 110, centered on the partition wall 112.

[0091] Therefore, in one embodiment of the present invention, creepage distances are formed on both sides of the housing 100 for the insulated converter with the partition wall 112 as the center. Thus, the creepage distance can be maximized under the same housing specifications, thereby not only maintaining insulation performance but also minimizing the overall size.

[0092] Furthermore, in one embodiment of the present invention, since the housing 100 for the insulating converter and the insulating converter 10 using the housing 100 for the insulating converter can be miniaturized, the manufacturing cost can be reduced.

[0093] The embodiments of the present invention have been described above, but these are merely examples. Those skilled in the art will understand that various modifications and equivalent embodiments can be implemented from the above embodiments. Therefore, the true scope of protection of the present invention should be determined by the claims.

[0094] Industrial applicability

[0095] This invention is a technique for improving the insulation performance and reducing the size of insulated converters by utilizing the laws of nature, which can be applied in industry.

Claims

1. A housing for an insulated converter, wherein, Includes a main body with primary and secondary lateral spaces. The subject includes: A partition wall vertically separates the primary side space and the secondary side space; The upper wall and the lower wall are disposed on the upper and lower sides of the partition wall; A first step portion, in each of the primary side space and the secondary side space, extends from the partition wall and is configured to contact the upper wall and the lower wall and form a step; and The second step extends from the first step toward the opposite side of the partition wall, and a fastening groove for fastening the PCB is provided on the side of the second step opposite to the partition wall.

2. The housing for an insulated converter according to claim 1, wherein, The partition wall is located in the center of the main body.

3. The housing for an insulated converter according to claim 1, wherein, It also includes side plates disposed on both sides of the main body.

4. The housing for an insulated converter according to claim 3, wherein, It also includes input / output terminals located on the outside of the side plate.

5. The housing for an insulated converter according to claim 1, wherein, The primary side space and the secondary side space are defined by the upper wall, the lower wall, and the partition wall.

6. The housing for an insulated converter according to claim 1, wherein, The longitudinal length of the main body is greater than its transverse length in order to minimize the area of ​​the bottom surface opposite the setting surface.

7. An insulated converter, wherein, include: The housing according to any one of claims 1 to 6; The primary side core and the primary side PCB are disposed in the primary side space; as well as The secondary side core and the secondary side PCB are disposed in the secondary side space.

8. The isolation-type converter according to claim 7, wherein, The primary side core and the secondary side core are disposed on the partition wall side.

9. The insulated converter according to claim 7, wherein, The primary-side PCB is disposed on the opposite side of the primary-side core, and the secondary-side PCB is disposed on the opposite side of the secondary-side core.

10. The isolation-type converter according to claim 8, wherein, It also includes an elastic pressure section that maintains the gap between the primary side core and the secondary side core.

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