Inductor and DC-DC integrated device

Abstract

An inductor and DC-DC integrated device comprises a magnetic ring and two symmetrical windings wound on the magnetic ring, the magnetic ring is of an annular structure connected end to end, the two windings are arranged at intervals, each winding comprises a first copper bar, a second copper bar, a third copper bar, a fourth copper bar and a fifth copper bar, and the first copper bar and the second copper bar are arranged at intervals. One end of the third copper bar is detachably connected with the first copper bar, the other end of the third copper bar is detachably connected with the second copper bar, the fourth copper bar is detachably connected with the first copper bar, the fifth copper bar is detachably connected with the second copper bar, one of the fourth copper bar and the fifth copper bar is used for inputting current, and the other of the fourth copper bar and the fifth copper bar is used for outputting current, so that the winding is of a split type structure; the magnetic ring is of an integrated structure, the magnetic conductivity loss of the magnetic ring is reduced, the sectional area of the magnetic ring and the size of the inductor are reduced under the condition that the same performance is achieved, miniaturization of the inductor is facilitated, and meanwhile the installation difficulty and the size deviation of the winding are reduced.

Description

Technical Field

[0001] This invention relates to the field of inductor technology, and more specifically to an inductor and DC-DC integrated device. Background Technology

[0002] Currently, hydrogen fuel cell vehicles and systems are becoming increasingly powerful, leading to larger current transmission volumes. Due to the increasing complexity of hydrogen fuel cell system control, electromagnetic interference can severely damage the vehicle and system, potentially rendering the entire system inoperable. The primary solution to this problem is to suppress interference in the hydrogen fuel cell current transmission system using inductors. However, in existing technologies, to achieve an effective electromagnetic effect from the inductor for large currents, the cross-sectional area of ​​the inductor winding is typically large, resulting in difficulties in winding, low dimensional accuracy, and large inductor size. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated inductor and DC-DC device that solves the problems of difficult wire winding, low dimensional accuracy, and large inductor size.

[0004] To achieve the objectives of this invention, the following technical solution is provided: This invention provides an inductor, comprising a magnetic ring and two symmetrical windings wound around the magnetic ring, the two windings being spaced apart; each winding comprising: a first copper busbar and a second copper busbar, the first copper busbar and the second copper busbar being spaced apart; a third copper busbar, one end of which is detachably connected to the first copper busbar and the other end of which is detachably connected to the second copper busbar; a fourth copper busbar and a fifth copper busbar, the fourth copper busbar being detachably connected to the first copper busbar and the fifth copper busbar being detachably connected to the second copper busbar, wherein one of the fourth copper busbar and the fifth copper busbar is used for input current and the other is used for output current.

[0005] In one embodiment, the first copper busbar has a first socket, the second copper busbar has a second socket, and the first socket and the second socket are arranged opposite each other; one end of the third copper busbar has a first plug, and the other end of the third copper busbar has a second plug, the first plug is inserted into the first socket, and the second plug is inserted into the second socket.

[0006] In one embodiment, the first copper busbar is further provided with a third socket, and the second copper busbar is further provided with a fourth socket, the third socket and the fourth socket being staggered; a third plug is formed at one end of the fourth copper busbar, and a fourth plug is formed at one end of the fifth copper busbar, the third plug is inserted into the third socket, and the fourth plug is inserted into the fourth socket.

[0007] In one embodiment, the fourth copper busbar has a first plug-in portion and a first connecting portion, the first plug-in portion being connected to the first connecting portion, and the end of the first plug-in portion away from the first connecting portion being detachably connected to the first copper busbar via the third plug; the fifth copper busbar has a second plug-in portion and a second connecting portion, the second plug-in portion being connected to the second connecting portion, and the end of the second plug-in portion away from the second connecting portion being detachably connected to the second copper busbar via the fourth plug; the first plug-in portion and the second plug-in portion are staggered.

[0008] In one embodiment, the first plug-in portion and the second plug-in portion extend along the third direction, and the first connecting portion and the second connecting portion extend along the first direction, the third direction intersecting the first direction; the inductor further includes a first connecting terminal and a second connecting terminal, the first connecting terminal being detachably connected to the first connecting portion, and the second connecting terminal being detachably connected to the second connecting portion.

[0009] In one embodiment, the third copper busbar has a third connecting portion and two third plug-in portions, with the two ends of the third connecting portion respectively connected to the third plug-in portions, and the two third plug-in portions are symmetrically arranged; wherein, the first connecting portion forms a first connecting hole, the second connecting portion forms a second connecting hole, and the third connecting portion forms a third connecting hole.

[0010] In one embodiment, the inductor further includes an insulating structure, the insulating structure including a magnetic ring shell, the magnetic ring shell covering the magnetic ring, and both windings being wound around the magnetic ring shell.

[0011] In one embodiment, the insulation structure further includes a first partition and a second partition, both of which are connected to the magnetic ring housing. The first partition is disposed between the two windings, and the second partition is disposed between the first copper busbar and the second copper busbar. Alternatively, the insulation structure further includes a third partition and a fourth partition, both of which are connected to the magnetic ring housing. The third partition is disposed between the fourth copper busbar and the third copper busbar, and the fourth partition is disposed between the fifth copper busbar and the third copper busbar.

[0012] In one embodiment, the inductor further includes a heat exchange structure having an installation space and a flow channel, wherein the magnetic ring, the insulation structure, and the two windings are all housed within the installation space, and the flow channel is used for the passage of the heat exchange medium.

[0013] In a second aspect, the present invention also provides a DC-DC integrated device, including a housing and an inductor as described in any one of the embodiments of the first aspect, the inductor being housed within the housing.

[0014] The inductor provided by this invention features a magnetic ring and two symmetrical windings wound around it. The magnetic ring is a ring structure with its ends connected. The two windings are spaced apart. Each winding includes a first copper busbar, a second copper busbar, a third copper busbar, a fourth copper busbar, and a fifth copper busbar. The first and second copper busbars are spaced apart. One end of the third copper busbar is detachably connected to the first copper busbar, and the other end is detachably connected to the second copper busbar. The fourth copper busbar is detachably connected to the first copper busbar, and the fifth copper busbar is detachably connected to the second copper busbar. One of the fourth and fifth copper busbars is used for input current, and the other is used for output current. This design allows the windings to be a split structure while the magnetic ring is an integral structure. This reduces the permeability loss of the magnetic ring and achieves a reduction in the cross-sectional area of ​​the magnetic ring and the volume of the inductor while maintaining the same performance. This is beneficial for miniaturizing the inductor and also reduces the difficulty of winding installation and dimensional deviations. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of an inductor according to one embodiment; Figure 2 This is an exploded view of an inductor according to one embodiment; Figure 3 This is a cross-sectional view of an inductor according to one embodiment; Figure 4 This is a structural diagram of a magnetic ring and two windings according to one embodiment; Figure 5 This is a structural diagram of a magnetic ring and two windings in another embodiment; Figure 6 This is a structural diagram of two windings in one embodiment; Figure 7 This is a structural diagram of one winding in one embodiment; Figure 8 This is an exploded view of two windings in one embodiment; Figure 9 This is a structural diagram of an insulation structure according to one embodiment; Figure 10 This is a structural diagram of a heat exchange structure according to one embodiment; Figure 11This is a structural diagram of a DC-DC integrated device.

[0017] Explanation of reference numerals in the attached figures: 1000-DC-DC integrated device; 100-Inductor; 10-Magnetic ring, 11-Winding part; 20 - Winding, 21 - First copper busbar, 211 - First socket, 212 - Third socket 22-Second copper busbar, 221-Second socket, 222-Fourth socket 23-Third copper busbar, 231-First insert, 232-Second insert, 233-Third connector, 234-Third connecting part, 235-Third connecting hole. 24-Fourth copper busbar, 241-Third insert, 242-First insert part, 243-First connecting part, 244-First connecting hole. 25-Fifth copper busbar, 251-Fourth insert block, 252-Second insert part, 253-Second connecting part, 254-Second connecting hole; 30 - First connecting terminal; 31 - First mounting hole; 40 - Second connecting terminal; 41 - Second mounting hole; 50 - Insulation structure; 51 - Magnetic ring shell; 511 - Shell; 512 - Cover plate; 513 - Third mounting hole; 514 - First connector; 52 - First partition; 521 - First partition; 522 - Second partition; 53 - Second partition; 54 - Protrusion; 55 - Third partition; 551 - Third partition; 552 - Fourth partition; 56 - Fourth partition; 57 - Second positioning structure; 60 - First fastener; 70 - Second fastener; 80-Heat exchange structure, 81-Heat exchange plate, 811-Flow channel, 82-Mounting component, 821-Mounting space, 822-Second connecting component, 83-First positioning structure, 84-Heat dissipation fins; 200-Housing, 201-Signal control interface, 202-Air compressor controller output interface, 203-PTC / DCL interface, 204-DC main output interface, 205-Hydrogen fuel cell stack mounting port, 206-First cooling water port, 207-Second cooling water port; X - Second direction, Y - First direction, Z - Third direction. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0020] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0021] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0022] Please refer to Figures 1 to 9 This invention provides an inductor 100, comprising a magnetic ring 10 and two symmetrical windings 20 wound around the magnetic ring 10. The magnetic ring 10 is a ring structure with its ends connected, and the two windings 20 are spaced apart. Each winding 20 includes a first copper busbar 21, a second copper busbar 22, a third copper busbar 23, a fourth copper busbar 24, and a fifth copper busbar 25. The first and second copper busbars 21 are spaced apart. One end of the third copper busbar 23 is detachably connected to the first copper busbar 21, and the other end is detachably connected to the second copper busbar 22. The fourth copper busbar 24 is detachably connected to the first copper busbar 21, and the fifth copper busbar 25 is detachably connected to the second copper busbar 22. The first and second copper busbars 21 and 22 are flush, the third copper busbar 23 is U-shaped, and the fourth and fifth copper busbars 24 and 25 are located on opposite sides of the third copper busbar 23 in a second direction X, and are spaced apart from the third copper busbar 23.

[0023] For a detailed implementation, please refer to Figure 3The magnetic ring 10 includes two winding portions 11 symmetrically arranged in the second direction X, and two arc-shaped portions (not shown) symmetrically arranged in the first direction Y. Each arc-shaped portion connects to one of the two winding portions 11 to form a ring structure with ends connected. Two windings 20 are respectively wound on the two winding portions 11, ensuring that there are no air gaps throughout the magnetic ring 10 and that the magnetic fields passing through the two windings 20 are identical. This makes the inductance of the common-mode current passing through the two windings 20 consistent, which is beneficial for improving the common-mode interference suppression effect of the inductor 100. The first direction Y intersects with the second direction X, where the first direction Y corresponds to the length direction of the inductor 100 and the second direction X corresponds to the width direction of the inductor 100.

[0024] For a detailed implementation, please refer to Figure 8 The first copper busbar 21 has a first socket 211, and the second copper busbar 22 has a second socket 221. The first socket 211 and the second socket 221 are arranged opposite each other or staggered. One end of the third copper busbar 23 has a first plug 231, and the other end of the third copper busbar 23 has a second plug 232. The first plug 231 is inserted into the first socket 211, and the second plug 232 is inserted into the second socket 221.

[0025] Optionally, in the orthographic projection onto the third direction Z, the outline shape of the first socket 211, the second socket 221, the first plug block 231 and the second plug block 232 can be rectangular, triangular, circular, elliptical and other non-circular shapes, without restriction.

[0026] Optionally, the first insert 231 and the first socket 211 are interference-fitted, or the size of the first insert 231 is smaller than the size of the first socket 211. The first insert 231 and the first socket 211 can be connected and fixed by welding, snap-fitting, screwing, riveting, etc., without limitation. Optionally, the connection direction of the second insert 232 and the second socket 221 is similar to the connection direction of the first insert 231 and the first socket 211, which can be referred to for reference only and will not be described again. Optionally, the first insert 231, the second insert 232 and the third copper busbar 23 are an integral structure.

[0027] Optionally, there are multiple first plugs 231, second plugs 232, first sockets 211 and second sockets 221, which are spaced apart. Multiple first plugs 231 and multiple first sockets 211 are connected one-to-one, and multiple second plugs 232 and multiple second sockets 221 are connected one-to-one, so as to improve the connection strength between the third copper busbar 23 and the first copper busbar 21 and the second copper busbar 22.

[0028] By setting the first copper busbar 21 to have a first socket 211 and the second copper busbar 22 to have a second socket 221, with the first socket 211 and the second socket 221 being directly opposite each other or staggered, and the third copper busbar 23 having a first plug 231 at one end and a second plug 232 at the other end, the first plug 231 is inserted into the first socket 211 and the second plug 232 is inserted into the second socket 221, so that the third copper busbar 23 is relatively fixed to the first copper busbar 21 and the second copper busbar 22 in the first direction Y and the second direction X, thereby improving the connection strength.

[0029] For a detailed implementation, please refer to Figure 8 The first copper busbar 21 is also provided with a third socket 212, and the second copper busbar 22 is also provided with a fourth socket 222. The third socket 212 and the fourth socket 222 are staggered. One end of the fourth copper busbar 24 is provided with a third plug 241, and one end of the fifth copper busbar 25 is provided with a fourth plug 251. The third plug 241 is inserted into the third socket 212, and the fourth plug 251 is inserted into the fourth socket 222.

[0030] Specifically, the third socket 212 and the first socket 211 are located at the two farthest diagonal positions of the first copper busbar 21, and the fourth socket 222 and the second socket 221 are located at the two farthest diagonal positions of the second copper busbar 22. This arrangement ensures that the fourth copper busbar 24 and the fifth copper busbar 25 and the third copper busbar 23 are spaced apart, while also ensuring that the fourth copper busbar 24 and the fifth copper busbar 25 have a cross-sectional area that meets performance requirements, thereby improving the space utilization of the inductor 100.

[0031] Optionally, the shape and connection direction of the third socket 212, the third plug block 241, the fourth socket 222 and the fourth plug block 251 are similar to the shape and connection direction of the first plug block 231, the second plug block 232, the first socket 211 and the second socket 221 mentioned above. They can be referred to for reference and will not be described again.

[0032] By setting the first copper busbar 21 to also have a third socket 212, and the second copper busbar 22 to also have a fourth socket 222, the third socket 212 and the fourth socket 222 are staggered. One end of the fourth copper busbar 24 forms a third plug 241, and one end of the fifth copper busbar 25 forms a fourth plug 251. The third plug 241 is inserted into the third socket 212, and the fourth plug 251 is inserted into the fourth socket 222, so that the fourth copper busbar 24 and the first copper busbar 21 are relatively fixed in the first direction Y and the second direction X, and the fifth copper busbar 25 and the second copper busbar 22 are relatively fixed in the first direction Y and the second direction X, thereby improving the connection strength.

[0033] For a detailed implementation, please refer to Figures 4 to 8The fourth copper busbar 24 has a first plug-in portion 242 and a first connecting portion 243. The first plug-in portion 242 is connected to the first connecting portion 243. The end of the first plug-in portion 242 away from the first connecting portion 243 is detachably connected to the first copper busbar 21 through a third plug 241. The fifth copper busbar has a second plug-in portion 252 and a second connecting portion 253. The second plug-in portion 252 is connected to the second connecting portion 253. The end of the second plug-in portion 252 away from the second connecting portion 253 is detachably connected to the second copper busbar 22 through a fourth plug 251. The first plug-in portion 242 and the second plug-in portion 252 are staggered.

[0034] For a detailed implementation, please refer to Figure 8 The first plug-in portion 242 and the second plug-in portion 252 extend along a third direction Z, and the first connecting portion 243 and the second connecting portion 253 extend along a first direction Y. The inductor 100 also includes a first connecting terminal 30 and a second connecting terminal 40. The first connecting terminal 30 is detachably connected to the first connecting portion 243, and the second connecting terminal 40 is detachably connected to the second connecting portion 253.

[0035] See Appendix Figure 2 The first connecting terminal 30 has a first mounting hole 31, and the second connecting terminal has a second mounting hole 41. The inductor 100 also includes a magnetic ring housing 51, which has multiple third mounting holes 513. The inductor 100 also includes multiple first fixing members 60 and multiple second fixing members 70. The multiple first fixing members 60 are installed one-to-one in the multiple third mounting holes 513. One of the second fixing members 70 passes through the first mounting hole 31 and the first connecting hole 244, and another second fixing member 70 passes through the second mounting hole 41 and the second connecting hole 254. The multiple second fixing members 70 are connected and fixed one-to-one with the multiple first fixing members 60, so that the first connecting terminal 30 and the second connecting terminal 40 are detachably connected to the fourth copper busbar 24 and the fifth copper busbar 25, respectively, and the fourth copper busbar 24 and the fifth copper busbar 25 are connected to the magnetic ring housing 51. Optionally, the first fixing member 60 is a nut, and the second fixing member 70 is a bolt of the corresponding specification.

[0036] For a detailed implementation, please refer to Figures 4 to 7 The third copper busbar 23 includes a third connecting part 234 and two third plug-in parts 233 connected in sequence. The two ends of the third connecting part 234 are respectively connected to the two third plug-in parts 233, and the two third plug-in parts 233 are symmetrically arranged.

[0037] Please refer to the following: Figure 8The first connecting portion 243 has a first connecting hole 244, the second connecting portion 253 has a second connecting hole 254, and the third connecting portion 234 has a third connecting hole 235. The first connecting hole 244 and the second connecting hole 254 are used to receive input or output current, and the third connecting hole 235 is used for positioning.

[0038] Specifically, both third plug-in portions 233 extend along the third direction Z, and the third connecting portion 234 extends along the first direction Y. Both third plug-in portions 233 are located on the side of the third connecting portion 234 in the third direction Z, and the two third plug-in portions 233 are arranged opposite to each other in the first direction Y.

[0039] Optionally, the third copper busbar 23 has a U-shaped structure, and the third connecting part 234 and the two third plug-in parts 233 are an integral structure.

[0040] By setting the third copper busbar 23 to include a third connecting part 234 and two third plug-in parts 233 connected in sequence, the two ends of the third connecting part 234 are respectively connected to the two third plug-in parts 233, and the two third plug-in parts 233 are symmetrically arranged. The first connecting part 243 forms a first connecting hole 244, the second connecting part 253 forms a second connecting hole 254, and the third connecting part 234 forms a third connecting hole 235. The first connecting hole 244 and the second connecting hole 254 are used to receive input or output current, and the third connecting hole 235 is used for positioning, so that the third copper busbar 23 can be connected to the first copper busbar 21 and the second copper busbar 22 to be arranged around the magnetic ring 10. At the same time, the structure of the third copper busbar 23 is simple and easy to process and form.

[0041] In a specific embodiment, the third plug-in portion 233, the first plug-in portion 242 and the second plug-in portion 252 have the same extension length in the third direction Z, and the first connecting portion 243, the second connecting portion 253 and the third connecting portion 234 have the same extension length in the first direction Y, so that the impedance at all points of the winding 20 is consistent, which is beneficial to the balance of common mode suppression effect and the reduction of inductive reactance to differential mode signals.

[0042] In the specific implementation method, please refer to Figure 8 The fourth copper busbar 24 and the fifth copper busbar 25 have the same shape, and the fourth copper busbar 24 and the fifth copper busbar 25 are arranged opposite to each other along the first direction Y.

[0043] Specifically, the first copper busbar 21 and the second copper busbar 22 have the same shape, that is, the first copper busbar 21 and the second copper busbar 22 are arranged in a complementary manner.

[0044] For a detailed implementation, please refer to Figure 4 , Figure 5 and Figure 9The inductor 100 also includes an insulating structure 50, which includes a magnetic ring housing 51 that encloses the magnetic ring 10. Both windings 20 are wound around the magnetic ring housing 51. Specifically, the magnetic ring housing 51 includes a shell 511 and a cover plate 512. The shapes of the shell 511 and the cover plate 512 correspond to the shape of the magnetic ring 10. The magnetic ring 10 is housed within the shell 511. The cover plate 512 is detachably connected to the shell 511 to close the opening of the shell 511, thereby completely insulating the magnetic ring 10 from the windings 20, preventing short circuits between the magnetic ring 10 and the windings 20, and increasing the cross-sectional area of ​​the windings 20.

[0045] For a detailed implementation, please refer to Figure 4 , Figure 5 and Figure 9 The insulation structure 50 also includes a first partition 52 and a second partition 53. Both the first partition 52 and the second partition 53 are connected to the magnetic ring housing 51. The first partition 52 is disposed between the two windings 20, and the second partition 53 is disposed between the first copper busbar 21 and the second copper busbar 22.

[0046] Specifically, the first partition 52 includes a first partition 521 and a second partition 522. The magnetic ring shell 51 has an annular structure with its ends connected. The first partition 521 passes through the shell 511 and protrudes from the shell 511 in the third direction Z. The first partition 521 is connected to the inner peripheral sidewall of the shell 511 and the end face of the shell 511 in the third direction Z. The second partition 522 is disposed on the end face of the cover plate 512 facing the first copper busbar 21 and the second copper busbar 22 in the third direction Z, and is directly opposite the first partition 521 in the third direction Z. Optionally, multiple protrusions 54 are connected to the opposite surfaces of the first partition 52 in the first direction Y and the inner peripheral sidewall of the shell 511. The protrusions 54 are used to elastically abut against the winding 20 to improve the connection strength between the winding 20 and the magnetic ring shell 51. Optionally, the first partition 521 and the shell 511 are an integral structure, and the second partition 522 and the cover plate 512 are an integral structure.

[0047] The second partition 53 is disposed on the two opposite end faces of the cover plate 512 in the first direction Y and on the surface facing the first copper busbar 21 and the second copper busbar 22, and is connected to the second partition portion 522. Optionally, the second partition 53 and the cover plate 512 are integrally formed.

[0048] The first partition 52 protrudes from the winding 20 at both ends in the third direction Z and at least one end in the second direction X. The second partition 53 protrudes from the first copper busbar 21 and the second copper busbar 22 at one end in the third direction Z and both ends in the first direction Y. The second partition 53 extends along the edge shape of the first copper busbar 21 and the second copper busbar 22. The third direction Z intersects with both the first direction Y and the second direction X. The third direction Z corresponds to the height direction of the inductor 100 to increase the creepage distance between adjacent copper busbars and prevent arcing and breakdown.

[0049] By setting a first partition 52 and a second partition 53, both the first partition 52 and the second partition 53 are connected to the magnetic ring housing 51. The first partition 52 is set between the two windings 20, and the second partition 53 is set between the first copper busbar 21 and the second copper busbar 22, so that the two windings 20 are insulated from each other and the first copper busbar 21 and the second copper busbar 22, thus preventing short circuits.

[0050] For a detailed implementation, please refer to Figure 4 , Figure 5 and Figure 9 The insulation structure 50 also includes a third partition 55 and a fourth partition 56. Both the third partition 55 and the fourth partition 56 are connected to the magnetic ring housing 51. The third partition 55 is disposed between the fourth copper busbar 24 and the third copper busbar 23, and the fourth partition 56 is disposed between the fifth copper busbar 25 and the third copper busbar 23.

[0051] Optionally, the first partition 52 extends along the second direction X, and the third partition 55 and the fourth partition 56 both extend along the first direction Y, with the third partition 55 and the fourth partition 56 spaced apart from each other in the second direction X. Optionally, the third partition 55 protrudes from the outer peripheral surfaces of the fourth copper busbar 24 and the third copper busbar 23, and the fourth partition 56 protrudes from the outer peripheral surfaces of the fifth copper busbar 25 and the third copper busbar 23. Specifically, the third partition 55 includes a third partition portion 551 and a fourth partition portion 552. The third partition portion 551 is connected to the inner peripheral sidewall of the housing 511, the end face of the housing 511 facing away from the cover plate 512 in the third direction Z, and the two end faces of the housing 511 facing away from each other in the first direction Y. The fourth partition portion 552 is connected to the two end faces of the cover plate 512 facing away from each other in the first direction Y, and is directly opposite the third partition portion 551 in the third direction Z. Optionally, the third partition 551 and the housing 511 are integrally formed, and the fourth partition 552 and the cover plate 512 are integrally formed. Optionally, the structure of the fourth partition 56 is similar to that of the third partition 55, and will not be described again. Optionally, both the third partition 55 and the fourth partition 56 protrude beyond the fourth copper busbar 24 and the fifth copper busbar 25 in the first direction Y and the third direction Z, respectively.

[0052] By setting a third partition 55 and a fourth partition 56, both of which are connected to the magnetic ring housing 51, the third partition 55 is set between the fourth copper busbar 24 and the third copper busbar 23, and the fourth partition 56 is set between the fifth copper busbar 25 and the third copper busbar 23, so that the fourth copper busbar 24 and the fifth copper busbar 25 are insulated to prevent short circuit.

[0053] For a detailed implementation, please refer to Figures 1 to 3 The inductor 100 also includes a heat exchange structure 80, which has an installation space 821 and a flow channel 811. The magnetic ring 10, the insulating structure 50, and the two windings 20 are all housed within the installation space 821. The flow channel 811 is used for the passage of the heat exchange medium (not shown). Specifically, the heat exchange structure 80 includes a heat exchange plate 81 and a mounting member 82. The mounting member 82 is disposed on one surface of the heat exchange plate 81 in the third direction Z. The mounting member 82 encloses the installation space 821. The heat exchange plate 81 has a flow channel 811. The cover plate 512 of the magnetic ring shell 51 of the insulating structure 50 is connected to the heat exchange plate 81. There is a gap between the two windings 20 and the inner peripheral sidewall of the installation space 821. The installation space 821 is filled with an insulating medium (not shown) to insulate the magnetic ring 10 and the two windings 20 from the heat exchange structure 80 and improve the heat exchange efficiency. Optionally, the surfaces of the two windings 20 facing the inner peripheral sidewalls and bottom wall of the mounting space 821 are both planar to further improve heat exchange efficiency.

[0054] In a specific embodiment, the outer peripheral surface of the mounting component 82 is connected with a plurality of spaced heat dissipation ribs 84, which extend in the third direction Z to increase the heat exchange area between the mounting component 82 and the external environmental medium.

[0055] By setting up a heat exchange structure 80, which has an installation space 821 and a flow channel 811, the magnetic ring 10, the insulation structure 50 and the two windings 20 are all housed in the installation space 821. The flow channel 811 is used for the passage of the heat exchange medium, so that the inductor 100 can exchange heat with the heat exchange medium in the flow channel 811 through the heat exchange structure 80, thereby improving the heat dissipation performance of the inductor 100.

[0056] For a detailed implementation, please refer to Figure 5 and Figure 10 The bottom wall of the installation space 821 is provided with a first positioning structure 83, and the end of the insulating structure 50 facing the bottom wall of the installation space 821 is provided with a second positioning structure 57. The first positioning structure 83 and the second positioning structure 57 are detachably connected.

[0057] Specifically, the first positioning structure 83 is a positioning hole recessed in the heat exchange plate 81, and the second positioning structure 57 is a positioning pin provided on the cover plate 512 of the magnetic ring shell 51 of the aforementioned insulating structure 50. The positioning pin protrudes from the first copper busbar 21 and the second copper busbar 22 of the two windings 20. A portion of the positioning pin is received in the positioning hole and abuts against the bottom wall of the positioning hole, so that there is a preset interval distance between the first copper busbar 21 and the second copper busbar 22 and the heat exchange plate 81, so as to achieve miniaturization of the inductor 100 while ensuring that there is a sufficient heat exchange distance between the windings 20 and the heat exchange plate 81.

[0058] Optionally, there are multiple first positioning structures 83 and multiple second positioning structures 57, with each of the multiple first positioning structures 83 and multiple second positioning structures 57 connected in a one-to-one correspondence.

[0059] The installation space 821 has a first positioning structure 83 on its bottom wall, and the insulation structure 50 has a second positioning structure 57 on one end facing the bottom wall of the installation space 821. The first positioning structure 83 and the second positioning structure 57 are detachably connected, which allows for effective positioning when installing the heat dissipation structure and ensures the installation accuracy of the inductor 100.

[0060] For a detailed implementation, please refer to Figure 2 and Figure 10 The magnetic ring housing 51 also includes a first connector 514, which is disposed on the outside of the housing 511. The heat exchange structure 80 also includes a second connector 822, which is disposed on the outside of the mounting member 82 and connected to the first connector 514 to stabilize the structure of the inductor 100. Optionally, there are multiple first connectors 514 and multiple second connectors 822, with the multiple first connectors 514 spaced apart from each other and the multiple second connectors 822 corresponding one-to-one with the multiple first connectors 514.

[0061] The inductor 100 provided by this invention features a magnetic ring 10 and two symmetrical windings 20 wound around the magnetic ring 10. The magnetic ring 10 is a ring structure with its ends connected. The two windings 20 are spaced apart. Each winding 20 includes a first copper busbar 21, a second copper busbar 22, and a third copper busbar 23. The first copper busbar 21 and the second copper busbar 22 are spaced apart and flush. The third copper busbar 23 is U-shaped. One end of the third copper busbar 23 is detachably connected to the first copper busbar 21, and the other end is detachably connected to the second copper busbar 22. This design makes the windings 20 a split structure while the magnetic ring 10 is an integral structure. This reduces the permeability loss of the magnetic ring 10 and achieves a reduction in the cross-sectional area of ​​the magnetic ring and the volume of the inductor 100 while maintaining the same performance. This is beneficial for miniaturizing the inductor 100 and also reduces the installation difficulty and dimensional deviation of the windings 20.

[0062] Please refer to Figure 11The present invention also provides a DC-DC integrated device 1000, including a housing 200 and an inductor 100 as described in the embodiments of the present invention, wherein the inductor 100 is located within the housing 200. In a specific embodiment, the DC-DC integrated device 1000 further includes a signal control interface 201, an air compressor controller output interface 202, a PTC / DCL interface 203, a DC main output interface 204, a hydrogen fuel cell stack mounting port 205, a first cooling water port 206, and a second cooling water port 207. The signal control interface 201, the air compressor controller output interface 202, the PTC / DCL interface 203, the DC main output interface 204, the hydrogen fuel cell stack mounting port 205, the first cooling water port 206, and the second cooling water port 207 are all disposed on the housing 200 and extend outside the housing 200.

[0063] The DC-DC integrated device 1000 provided by the present invention, by setting a housing 200 and an inductor 100 in the embodiment of the present invention, the inductor 100 is located inside the housing 200, the inductor 100 has a small volume and occupies less space in the housing 200, which is beneficial to realizing the miniaturization of the DC-DC integrated device 1000.

[0064] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0065] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. An inductor (100), characterized in that, It includes a magnetic ring (10) and two symmetrical windings (20) wound around the magnetic ring (10), the two windings (20) being spaced apart; The winding (20) includes: The first copper busbar (21) and the second copper busbar (22) are arranged at intervals; The third copper busbar (23) has one end detachably connected to the first copper busbar (21) and the other end detachably connected to the second copper busbar (22); The fourth copper busbar (24) and the fifth copper busbar (25) are detachably connected to the first copper busbar (21) and the fifth copper busbar (25) is detachably connected to the second copper busbar (22). One of the fourth copper busbar (24) and the fifth copper busbar (25) is used for input current and the other is used for output current.

2. The inductor (100) according to claim 1, characterized in that, The first copper busbar (21) has a first socket (211), and the second copper busbar (22) has a second socket (221). The first socket (211) and the second socket (221) are arranged opposite each other. One end of the third copper busbar (23) is formed with a first insert (231), and the other end of the third copper busbar (23) is formed with a second insert (232). The first insert (231) is inserted into the first socket (211), and the second insert (232) is inserted into the second socket (221).

3. The inductor (100) according to claim 2, characterized in that, The first copper busbar (21) is also provided with a third socket (212), and the second copper busbar (22) is also provided with a fourth socket (222). The third socket (212) and the fourth socket (222) are staggered. A third insert (241) is formed at one end of the fourth copper busbar (24), and a fourth insert (251) is formed at one end of the fifth copper busbar (25). The third insert (241) is inserted into the third socket (212), and the fourth insert (251) is inserted into the fourth socket (222).

4. The inductor (100) according to claim 3, characterized in that, The fourth copper busbar (24) has a first plug-in portion (242) and a first connecting portion (243). The first plug-in portion (242) is connected to the first connecting portion (243). One end of the first plug-in portion (242) away from the first connecting portion (243) is detachably connected to the first copper busbar (21) through the third plug (241). The fifth copper busbar has a second plug-in portion (252) and a second connecting portion (253). The second plug-in portion (252) is connected to the second connecting portion (253). One end of the second plug-in portion (252) away from the second connecting portion (253) is detachably connected to the second copper busbar (22) through the fourth plug (251). The first plug-in portion (242) and the second plug-in portion (252) are misaligned.

5. The inductor (100) according to claim 4, characterized in that, The first plug-in portion (242) and the second plug-in portion (252) extend along the third direction (Z), and the first connecting portion (243) and the second connecting portion (253) extend along the first direction (Y), wherein the third direction (Z) intersects with the first direction (Y); The inductor (100) further includes a first connection terminal (30) and a second connection terminal (40), wherein the first connection terminal (30) is detachably connected to the first connection portion (243) and the second connection terminal (40) is detachably connected to the second connection portion (253).

6. The inductor (100) according to claim 5, characterized in that, The third copper busbar (23) has a third connecting part (234) and two third plug-in parts (233), the two ends of the third connecting part (234) are respectively connected to the third plug-in parts (233), and the two third plug-in parts (233) are symmetrically arranged; The first connecting part (243) has a first connecting hole (244), the second connecting part (253) has a second connecting hole (254), and the third connecting part (234) has a third connecting hole (235).

7. The inductor (100) according to any one of claims 1-6, characterized in that, The inductor (100) also includes an insulating structure (50), which includes a magnetic ring shell (51) that covers the magnetic ring (10), and both windings (20) are wound around the magnetic ring shell (51).

8. The inductor (100) according to claim 7, characterized in that, The insulation structure (50) further includes a first partition (52) and a second partition (53), both of which are connected to the magnetic ring housing (51). The first partition (52) is disposed between the two windings (20), and the second partition (53) is disposed between the first copper busbar (21) and the second copper busbar (22); and / or The insulation structure (50) further includes a third partition (55) and a fourth partition (56), both of which are connected to the magnetic ring shell (51). The third partition (55) is disposed between the fourth copper busbar (24) and the third copper busbar (23), and the fourth partition (56) is disposed between the fifth copper busbar (25) and the third copper busbar (23).

9. The inductor (100) according to claim 7, characterized in that, The inductor (100) also includes a heat exchange structure (80) having an installation space (821) and a flow channel (811), wherein the magnetic ring (10), the insulation structure (50) and the two windings (20) are all housed in the installation space (821), and the flow channel (811) is used for the passage of the heat exchange medium.

10. A DC-DC integrated device (1000), characterized in that, It includes a housing (200) and an inductor (100) as claimed in any one of claims 1-9, the inductor (100) being housed within the housing (200).

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