Electric reactor assembly and electrical cabinet

Abstract

The invention discloses a reactor assembly and an electrical cabinet, a first electrical part, a second electrical part and the reactor assembly are arranged in the electrical cabinet, the first electrical part is located above the second electrical part and is provided with a first electrical connection terminal, and the second electrical part is provided with a second electrical connection terminal. The electric reactor assembly is arranged at the bottom of the cabinet body and is arranged along the horizontal X-axis direction with the second electric part; the electric reactor assembly comprises an electric reactor and a protective cover; the reactor is provided with a coil winding, the coil winding is provided with a starting section close to the first electric connection terminal and a tail section close to the second electric connection terminal, the starting section penetrates through the protective cover, and the part, extending out of the protective cover, of the starting section forms a first leading-out terminal suitable for being electrically connected with the first electric connection terminal. And the tail section penetrates through the protective cover, and the part extending out of the protective cover forms a second leading-out terminal suitable for being electrically connected with the second electric connection terminal. The wiring distance between the electric reactor and the electric part of the electric cabinet is short, and interference to the outside is small.

Description

Technical Field

[0001] The present invention relates to the field of electrical technology, and in particular to a reactor component and an electrical cabinet. Background Art

[0002] The first lead terminal and the second lead terminal of the existing reactor are generally located at both ends of the reactor in the height direction. A protective cover made of metal material is usually set outside the reactor, and the first lead terminal and the second lead terminal extend out of the protective cover. When the reactor and the protective cover are placed in the electrical cabinet, due to the heavy weight of the reactor, they are generally placed at the bottom of the cabinet of the electrical cabinet. The first lead terminal and the second lead terminal are respectively connected to different electrical components. In practice, it is found that the wiring between the reactor and each electrical component is inconvenient and easily forms electromagnetic interference to the outside. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide a reactor assembly and an electrical cabinet, wherein the wiring distance between the reactor and the electrical components of the electrical cabinet is short and the external interference is small.

[0004] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Technical solution one and its related embodiments provide a reactor assembly for an electrical cabinet, the electrical cabinet comprising a cabinet body and a first electrical component and a second electrical component placed in the cabinet body, the first electrical component being located above the second electrical component and being provided with a first electrical connection terminal, the second electrical component being provided with a second electrical connection terminal, the reactor assembly being placed at the bottom of the cabinet body and being arranged along a horizontal X-axis direction with the second electrical component; the reactor assembly comprising a reactor and a protective cover arranged outside the reactor, the reactor being electrically connected to both the first electrical connection terminal and the second electrical connection terminal, the reactor being provided with a coil winding, the coil winding being provided with a starting section close to the first electrical connection terminal and an ending section close to the second electrical connection terminal, the starting section penetrating the protective cover and the part extending out of the protective cover forming a first lead-out terminal suitable for being electrically connected to the first electrical connection terminal, the ending section penetrating the protective cover and the part extending out of the protective cover forming a second lead-out terminal suitable for being electrically connected to the second electrical connection terminal.

[0006] Based on technical solution one, technical solution two is also provided. In technical solution two and its related embodiments, the first electrical connection terminal and the second electrical connection terminal are both close to the first side of the protective cover along the X-axis direction; the starting section and the ending section are close to each other along the vertical direction.

[0007] Based on Technical Solution 2, Technical Solution 3 is also provided. In Technical Solution 3 and its related embodiments, the protective cover includes a cover body and an insulating member, the cover body is provided with an opening, and the insulating member covers the opening; the starting section and the ending section both pass through the insulating member.

[0008] Based on technical solution three, there is also provided a technical solution four. In technical solution four and its related embodiments, the distance between the first lead terminal and the second lead terminal gradually increases in a direction away from the opening.

[0009] Based on technical solution 4, technical solution 5 is also provided. In technical solution 5 and its related embodiments, the first lead terminal extends along the vertical direction, and the second lead terminal extends along the X-axis direction.

[0010] Based on technical solution five, technical solution six is ​​also provided. In technical solution six and its related embodiments, the inductor is provided with a magnetic core; the starting section is provided with a first section connected to the first lead terminal as a whole, and the ending section is provided with a second section connected to the second lead terminal as a whole; the bottom end of the first section is closer to the magnetic core than the bottom end of the second section; the second section is inclined from bottom to top in a direction away from the magnetic core.

[0011] Based on technical solution six, technical solution seven is also provided. In technical solution seven and its related embodiments, the insulating member has a first insulating plate and a second insulating plate, the first insulating plate and the second insulating plate are detachably fixed to each other and are detachably fixed to the cover body, the starting section penetrates the first insulating plate in the vertical direction, and the ending section penetrates the second insulating plate in the X-axis direction.

[0012] Based on Technical Solution Seven, Technical Solution Eight is also provided. In Technical Solution Eight and its related embodiments, a first through hole is provided on the first insulating plate for the starting section to pass through, and a second through hole is provided on the second insulating plate for the ending section to pass through; sealing rings are provided at both the first through hole and the second through hole; and at least two walls that fit each other are provided at the edges of the first insulating plate and the second insulating plate.

[0013] Based on technical solutions one to eight, a technical solution nine is also provided. In technical solution nine and its related embodiments, the cabinet is provided with a bottom wall; the bottom end of the protective cover is fixedly connected to the bottom wall and is provided with a vent; the reactor assembly is also provided with a support portion fixedly connected to the bottom of the reactor, and the support portion is fixedly connected to the bottom wall so that the reactor is suspended on the bottom wall.

[0014] Technical solution ten and its related embodiments provide an electrical cabinet, comprising a cabinet body, a first electrical component, a second electrical component and a reactor assembly as described in any one of technical solutions one to nine; the first electrical component and the second electrical component are placed in the cabinet body, the first electrical component is located above the second electrical component and is provided with a first electrical connection terminal, the second electrical component is provided with a second electrical connection terminal, the reactor assembly is placed at the bottom of the cabinet body and is arranged along the horizontal X-axis direction with the second electrical component; the reactor assembly comprises a reactor and a protective cover arranged outside the reactor, and the reactor is electrically connected to both the first electrical connection terminal and the second electrical connection terminal.

[0015] From the above description of the present invention and its preferred embodiments, it can be seen that, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0016] The applicant has learned through continuous observation, experimentation and research that the reason why the technical problem of "the wiring between the reactor and various electrical components is inconvenient and easily causes electromagnetic interference to the outside" in the existing technical scheme is that when the reactor is used in an electrical cabinet such as a PCS, its first lead terminal is connected to the first electrical component, and its second lead terminal is connected to the second electrical component. The reactor is often located at the bottom of the cabinet due to its heavy weight. The first lead terminal and the second lead terminal of the reactor are generally located at both ends of its height direction, while the first electrical connection terminal of the first electrical component and the second electrical connection terminal of the second electrical component are not located at both ends of the height direction of the reactor in the cabinet. Therefore, the first lead terminal and the second lead terminal of the reactor can only be approached by one of them. If the first lead terminal is close to the first electrical connection terminal, the wiring distance between the second lead terminal and the second electrical connection terminal is longer. If the second lead terminal is close to the second electrical connection terminal, the wiring distance between the first lead terminal and the first electrical connection terminal is longer. Since the first lead terminal or the second lead terminal of the reactor is a strong current terminal, the longer wiring part is likely to cause electromagnetic interference to the weak current part in the reactor.

[0017] In technical solution 1 and its preferred embodiments, the first electrical connection terminal refers to the part of the first electrical component used for electrical connection with other electrical components, which is spatially close to the housing of the first electrical component and does not include a copper busbar; the second electrical connection terminal refers to the part of the second electrical component used for electrical connection with other electrical components, which is spatially close to the housing of the second electrical component and does not include a copper busbar; "the coil winding is provided with a starting section close to the first electrical connection terminal and an ending section close to the second electrical connection terminal" means "the position of the starting section formed when the coil winding is wound is relatively close to the first electrical connection terminal along the X-axis direction, the Y-axis direction and the Z-axis direction, and the position of the ending section is relatively close to the second electrical connection terminal along the X-axis direction, the Y-axis direction and the Z-axis direction". The coil winding is provided with a starting section close to the first electrical connection terminal and an ending section close to the second electrical connection terminal, the starting section penetrates the protective cover and extends out of the protective cover to form a first lead-out terminal suitable for electrical connection with the first electrical connection terminal, and the ending section penetrates the protective cover and extends out of the protective cover. A second lead-out terminal suitable for being electrically connected to the second electrical connection terminal is formed, so that the position of the first lead-out terminal can be adjusted internally according to the position of the first electrical connection terminal through the winding of the coil winding, and the position of the second lead-out terminal can be adjusted according to the position of the second electrical connection terminal through the winding of the coil winding, so that the wiring distance between the first electrical connection terminal and the first lead-out terminal outside the protective cover is the shortest, and the wiring distance between the second electrical connection terminal and the second lead-out terminal is the shortest, which is convenient for wiring, and the wiring distance of the high-voltage part outside the protective cover is short, and the electromagnetic interference to other electrical components in the electrical cabinet is small; since the first electrical component is located above the second electrical component, the first electrical connection terminal is located above the second electrical connection terminal, and the reactor assembly and the second electrical component are arranged along the horizontal X-axis direction, therefore, the wiring between the first lead-out terminal and the first electrical connection terminal and the wiring between the second lead-out terminal and the second electrical connection terminal are also separated from each other in the vertical direction, thereby avoiding interference between the first lead-out terminal and the second lead-out terminal.

[0018] In technical solution two and its preferred embodiment, the first electrical connection terminal and the second electrical connection terminal are both close to the first side of the protective cover along the X-axis direction, which means that the first electrical connection terminal and the second electrical connection terminal are close to each other along the X-axis direction; the starting section and the last section are close to each other along the X-axis direction, and the starting section and the last section are close to each other in the vertical direction. On the one hand, the electrical connection between the first lead terminal and the first electrical connection terminal and the electrical connection between the second lead terminal and the second electrical connection terminal can be completed on the first side of the protective cover, further facilitating wiring; on the other hand, it is also convenient for winding the coil winding and fixing the first lead terminal and the second lead terminal. In actual applications, in order to meet safety requirements, the first lead terminal and the second lead terminal also need to be insulated. Since the first lead terminal and the second lead terminal are arranged on the same side and close to each other in the vertical direction, it is easier to set the insulation structure, especially creating conditions for only opening one opening in technical solution three, thereby creating conditions for improving the heat dissipation efficiency of the reactor assembly.

[0019] In the technical solution three and its preferred embodiment, in the prior art, the first lead terminal and the second lead terminal are respectively located on both sides of the reactor in the height direction, therefore, two openings need to be provided on the cover body, and air is easily leaked between the first lead terminal and the opening and between the second lead terminal and the opening, which makes the heat dissipation efficiency of the reactor low; in the technical solution, since the first lead terminal and the second lead terminal are close to each other in the vertical direction and the X-axis direction, it is sufficient to set one opening on the cover body, and the length of the opening in the vertical direction and the X-axis direction does not need to be too large, the insulating member is covered on the opening, and the starting section and the end section both pass through the insulating member, so that there is no need to set openings for the starting section and the end section respectively, but only one opening is required, and one opening reduces the air outlet area compared to two openings, reduces air leakage, and thus improves the heat dissipation efficiency of the reactor. In addition, the provision of the insulating member is conducive to meeting the safety requirements of the first lead terminal and the second lead terminal.

[0020] In technical solution four and its preferred embodiments, since the first lead terminal and the second lead terminal correspond to the same opening, the distance between the first lead terminal and the second lead terminal is relatively close, which poses a safety problem. In the present technical solution, the distance between the first lead terminal and the second lead terminal gradually increases in the direction away from the opening, which is more conducive to increasing the safety distance between the first lead terminal and the second lead terminal compared to a solution in which the first lead terminal and the second lead terminal are parallel to each other.

[0021] In technical solution five and its preferred embodiments, since the first electrical connection terminal is located above the second electrical connection terminal, the first lead-out terminal extends in the vertical direction and the second lead-out terminal extends in the X-axis direction, compared with the solution in which the first lead-out terminal is inclined relative to the vertical direction or the second lead-out terminal is inclined relative to the horizontal direction, it is more conducive to wiring operation and ensures the safety distance between the first lead-out terminal and the second lead-out terminal.

[0022] In technical solution six and its preferred embodiment, the bottom end of the first section is closer to the magnetic core than the bottom end of the second section; the second section is inclined from bottom to top in the direction away from the magnetic core, so that the first section and the second section are separated from each other, and the safety distance between the first section and the second section is met. Compared with the solution in which the second section is vertically extended or partially vertically extended, it is more conducive to reducing the space occupied by the reactor in the vertical direction, and the first lead terminal and the second lead terminal can be close to each other in the X-axis direction, thereby reducing the length of the opening in the X-axis direction and further reducing air leakage.

[0023] In Technical Solution 7 and its preferred embodiments, since the starting section and the last section penetrate the insulating member in different directions, the separate setting of the first insulating plate and the second insulating plate is more conducive to the penetration of the starting section and the last section than a whole insulating plate, and is more conducive to installation.

[0024] In technical solution eight and its preferred embodiment, sealing rings are provided at the first through hole and the second through hole, thereby avoiding air leakage at the first through hole and the second through hole and improving the heat dissipation efficiency of the reactor. The edges of the first insulating plate and the second insulating plate are provided with at least two walls that fit each other, thereby improving the strength of the first insulating plate and the second insulating plate, avoiding the insulation component from breaking when being fixed to the metal cover, thereby improving the stability of the reactor assembly.

[0025] In technical solution nine and its preferred embodiment, the bottom end of the protective cover is fixedly connected to the bottom wall and is provided with a vent, and the reactor assembly is also provided with a support portion fixedly connected to the bottom of the reactor, and the support portion is fixedly connected to the bottom wall so that the reactor is suspended from the bottom wall, thereby avoiding the air outlet of the reactor being blocked by the bottom wall, improving the heat dissipation efficiency, and raising the reactor, which is beneficial to improving the waterproof and dustproof effect of the reactor. In addition, it is also beneficial to shorten the wiring distance between the first lead terminal and the first electrical connection terminal, and the wiring distance between the second lead terminal and the second electrical connection terminal, further avoiding the interference between the first lead terminal and the second lead terminal.

[0026] Technical solution ten has the technical advantages of any one of technical solutions one to nine. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a partial schematic diagram of an electrical cabinet according to an embodiment of the present application;

[0029] Figure 2 for Figure 1 Side view of

[0030] Figure 3 for Figure 2 Section view in AA direction;

[0031] Figure 4 for Figure 3 An enlarged schematic diagram of part A;

[0032] Figure 5 Schematic diagram of a reactor according to an embodiment of the present application.

[0033] Figure 6 A schematic diagram of a reactor assembly according to an embodiment of the present application;

[0034] Figure 7 A schematic diagram of a reactor assembly with hidden insulating components according to an embodiment of the present application;

[0035] Description of main reference numerals:

[0036] Cabinet 10; bottom wall 11;

[0037] A first electrical component 20; a first electrical connection terminal 21;

[0038] A second electrical component 30; a second electrical connection terminal 31;

[0039] Reactor 40; magnetic core 41; coil winding 42; starting section 43; first section 431; first lead terminal 432; end section 44; second section 441; second lead terminal 442;

[0040] Protective cover 50; cover body 51; opening 511; insulating member 52; first insulating plate 521; first through hole 5211; second insulating plate 522; second through hole 5221; sealing ring 53;

[0041] Supporting portion 60; DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0044] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0045] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0046] In the claims and the specification except for the embodiments, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" only mean that the feature with one of the above directions is perpendicular to the feature with another direction, and do not require that they must be implemented according to the "X-axis direction", "Y-axis direction" and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Y-axis direction and the Z-axis direction. Among them, the X-axis direction can be divided into left and right, the Y-axis direction can be divided into front and back, and the Z-axis direction can be divided into top and bottom.

[0047] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0048] See also Figure 1-2 , Figure 1-2 An electrical cabinet is shown, comprising a cabinet body 10, a first electrical component 20, a second electrical component 30 and a reactor assembly.

[0049] The cabinet 10 is in a rectangular parallelepiped shape, with its length direction being the Y-axis direction, its width direction being the X-axis direction, and its height direction being the Z-axis direction. The cabinet 10 is provided with a bottom wall 11 .

[0050] The first electrical component 20, the second electrical component 30 and the reactor assembly are all placed in the cabinet 10. The first electrical component 20 is located above the second electrical component 30, and the reactor assembly is placed at the bottom of the cabinet 10 and arranged along the horizontal X-axis direction with the second electrical component 30. The first electrical component 20 is an IGBT power module in actual application, which is provided with a first electrical connection terminal 21. In this embodiment, the first electrical connection terminal 21 extends in the vertical direction; the second electrical component 30 is an AC electrical component in actual application, which is suspended on the bottom wall 11 and is provided with a second electrical connection terminal 31. The second electrical connection terminal 31 extends in the horizontal direction. The first electrical component 20 is Figure 1 The first electrical connection terminal 21 and the second electrical connection terminal 31 are both located above the reactor assembly, and are close to the first side of the reactor assembly along the X-axis direction. In this embodiment, the first electrical connection terminal 21 refers to the portion of the first electrical component 20 used for electrical connection with other electrical components, which is spatially close to the housing of the first electrical component 20 and does not include a copper busbar; the second electrical connection terminal 31 refers to the portion of the second electrical component 30 used for electrical connection with other electrical components, which is spatially close to the housing of the second electrical component 30 and does not include a copper busbar.

[0051] The reactor assembly includes a reactor 40, a protective cover 50 disposed outside the reactor 40, and a support portion 60 fixed to the bottom of the reactor 40. The first side of the reactor assembly along the X-axis direction is also the first side of the protective cover 50 along the X-axis direction. The reactor 40 is electrically connected to both the first electrical connection terminal 21 and the second electrical connection terminal 31.

[0052] See also Figure 3-4 , Figure 3-4The schematic diagram of the electrical connection between the reactor 40 and the first electrical connection terminal 21 and the second electrical connection terminal 31 is shown. The reactor 40 is provided with a magnetic core 41 extending in the vertical direction and a coil winding 42 wound on the magnetic core 41. In this embodiment, the number of magnetic cores 41 is 3, and the 3 magnetic cores 41 are arranged along the X-axis direction. Each coil winding 42 is provided with a starting section 43 close to the first electrical connection terminal 21 and an ending section 44 close to the second electrical connection terminal 31. The starting section 43 and the ending section 44 are both close to the first side of the protective cover 50 and close to each other in the vertical direction. Among them, the starting section 43 penetrates the protective cover 50 and the part extending outside the protective cover 50 forms a first lead terminal 432 suitable for electrical connection with the first electrical connection terminal 21, and the ending section 44 penetrates the protective cover 50 and the part extending outside the protective cover 50 forms a second lead terminal 442 suitable for electrical connection with the second electrical connection terminal 31. In this embodiment, “the coil winding 42 is provided with a starting section 43 close to the first electrical connection terminal 21 and an ending section 44 close to the second electrical connection terminal 31” means that “the starting section 43 formed when the coil winding 42 is wound is located at a relatively small distance from the first electrical connection terminal 21 along the X-axis direction, the Y-axis direction and the Z-axis direction, and the ending section 44 is located at a relatively small distance from the second electrical connection terminal 31 along the X-axis direction, the Y-axis direction and the Z-axis direction”. In this embodiment, the first lead terminal 432 extends in the vertical direction, and the second lead terminal 442 extends in the X-axis direction.

[0053] Specifically, see Figure 4-5 The starting section 43 is provided with a first section 431 connected to the first lead terminal 432, and the ending section 44 is provided with a second section 441 connected to the second lead terminal 442; the bottom end of the first section 431 is closer to the magnetic core 41 than the bottom end of the second section 441; the second section 441 is inclined from bottom to top in a direction away from the magnetic core 41.

[0054] See also Figure 6-7 The protective cover 50 includes a cover body 51 and an insulating member 52. The cover body 51 is made of metal material. An opening 511 is provided at the upper part of the cover body 51 near the second electrical component 30, and the insulating member 52 covers the opening 511. In this embodiment, the insulating member 51 is PC, and the insulating member 52 has a first insulating plate 521 and a second insulating plate 522. The first insulating plate 521 and the second insulating plate 522 are detachably fixed to each other and are detachably fixed to the cover body 51. The starting section 43 penetrates the first insulating plate 521 in the vertical direction, and the end section 44 penetrates the second insulating plate 522 in the X-axis direction, so that the starting section 43 and the end section 44 both penetrate the insulating member 52, and the distance between the first lead terminal 432 and the second lead terminal 442 gradually increases in the direction away from the opening 511.

[0055] In actual application, the first insulating plate 521 is provided with a first through hole 5211 for the starting section 43 to pass through, and the second insulating plate 522 is provided with a second through hole 5221 for the ending section 44 to pass through; sealing rings 53 are provided at the first through hole 5211 and the second through hole 5221; the edges of the first insulating plate 521 and the second insulating plate 522 are provided with at least two walls that fit each other.

[0056] In this embodiment, the bottom end of the protective cover 50 is fixedly connected to the bottom wall 11 and is provided with a vent. The support portion 60 is fixedly connected to the bottom wall 11 so that the reactor 40 is suspended on the bottom wall 11 .

[0057] In this embodiment, the starting section 43 passes through the protective cover 50 and the part extending outside the protective cover 50 forms a first lead terminal 432 suitable for being electrically connected to the first electrical connection terminal 21, and the end section 44 passes through the protective cover 50 and the part extending outside the protective cover 50 forms a second lead terminal 442 suitable for being electrically connected to the second electrical connection terminal 31, so that the position of the first lead terminal 432 can be adjusted internally according to the position of the first electrical connection terminal 21 through the winding of the coil winding 42, and the position of the second lead terminal 442 can be adjusted internally according to the position of the second electrical connection terminal 31 through the winding of the coil winding 42, so that the wiring distance between the first electrical connection terminal 21 outside the protective cover 50 and the first lead terminal 432 is the shortest, and the The wiring distance between the second electrical connection terminal 31 and the second lead-out terminal 442 is the shortest, which is convenient for wiring, and also shortens the wiring distance of the high-voltage part outside the protective cover 50, which reduces the electromagnetic interference to other electrical components in the electrical cabinet; since the first electrical component 20 is located above the second electrical component 30, the first electrical connection terminal 21 is located above the second electrical connection terminal 31, and since the reactor assembly and the second electrical component 30 are arranged along the horizontal X-axis direction, the wiring between the first lead-out terminal 432 and the first electrical connection terminal 21 and the wiring between the second lead-out terminal 442 and the second electrical connection terminal 31 are also separated from each other in the vertical direction, thereby avoiding interference between the first lead-out terminal 432 and the second lead-out terminal 442.

[0058] In this embodiment, the first electrical connection terminal 21 and the second electrical connection terminal 31 are both close to the first side of the protective cover 50 along the X-axis direction, which means that the first electrical connection terminal 21 and the second electrical connection terminal 31 are close to each other along the X-axis direction, the starting section 43 and the end section 44 are close to each other along the X-axis direction, and the starting section 43 and the end section 44 are close to each other in the vertical direction. On the one hand, the electrical connection between the first lead terminal 432 and the first electrical connection terminal 21 and the electrical connection between the second lead terminal 442 and the second electrical connection terminal 31 can be completed on the first side of the protective cover 50, and the electrical connection between the first lead terminal 432 and the first electrical connection terminal 21 and the second lead terminal 442 and the second electrical connection terminal 31 can be completed. One step makes wiring convenient; on the other hand, it is also convenient for winding the coil winding 42 and fixing the first lead terminal 432 and the second lead terminal 442. In actual applications, in order to meet safety requirements, the first lead terminal 432 and the second lead terminal 442 also need to be insulated. Since the first lead terminal 432 and the second lead terminal 442 are arranged on the same side and close to each other in the vertical direction, it is more convenient to set the insulation structure, especially only opening one opening 511, which creates conditions for improving the heat dissipation efficiency of the reactor assembly.

[0059] In the present embodiment, in the prior art, the first lead terminal 432 and the second lead terminal 442 are respectively located on both sides of the height direction of the reactor 40, therefore, two openings 511 need to be provided on the cover body 51, and air leakage is easy to occur between the first lead terminal 432 and the opening 511 and between the second lead terminal 442 and the opening 511, resulting in low heat dissipation efficiency of the reactor 40; in the present technical solution, since the first lead terminal 432 and the second lead terminal 442 are close to each other in the vertical direction and the X-axis direction, only one opening 511 is required to be provided on the cover body 51, and the length of the opening 511 in the vertical direction and the X-axis direction does not need to be too large, the insulating member 52 covers the opening 511, and the starting section 43 and the ending section 44 both penetrate the insulating member 52, thus, there is no need to respectively provide openings 511 for the starting section 43 and the ending section 44, but only one opening 511 is required, and one opening 511 reduces the air outlet area and air leakage compared with two openings 511, thereby improving the heat dissipation efficiency of the reactor 40. In addition, the provision of the insulating member 52 is helpful in meeting the safety requirements of the first lead terminal 432 and the second lead terminal 442 .

[0060] In the present embodiment, since the first lead-out terminal 432 and the second lead-out terminal 442 correspond to the same opening 511, the distance between the first lead-out terminal 432 and the second lead-out terminal 442 is relatively close, which may result in safety issues. In the present technical solution, the distance between the first lead-out terminal 432 and the second lead-out terminal 442 gradually increases in the direction away from the opening 511. Compared with the solution in which the first lead-out terminal 432 and the second lead-out terminal 442 are parallel to each other, this is more conducive to increasing the safety distance between the first lead-out terminal 432 and the second lead-out terminal 442.

[0061] In this embodiment, since the first electrical component 20 is located above the second electrical component 30, the first electrical connection terminal 21 is located above the second electrical connection terminal 31, the first lead-out terminal 432 extends in the vertical direction, and the second lead-out terminal 442 extends in the X-axis direction. Compared with the solution in which the first lead-out terminal 432 is inclined relative to the vertical direction or the second lead-out terminal 442 is inclined relative to the horizontal direction, it is more conducive to wiring operations and ensures the safety distance between the first lead-out terminal 432 and the second lead-out terminal 442.

[0062] In this embodiment, the bottom end of the first section 431 is closer to the magnetic core 41 than the bottom end of the second section 441; the second section 441 is inclined from bottom to top in the direction away from the magnetic core 41, so that the first section 431 and the second section 441 are away from each other, and the safety distance between the first section 431 and the second section 441 is met. Compared with the solution in which the second section 441 is vertically extended or partially vertically extended, it is more conducive to reducing the space occupied by the inductor 40 in the vertical direction, and the first lead-out terminal 432 and the second lead-out terminal 442 can be close to each other in the X-axis direction, thereby reducing the length of the opening 511 in the X-axis direction, and further reducing air leakage.

[0063] In this embodiment, since the starting section 43 and the last section 44 penetrate the insulating member 52 in different directions, the separate setting of the first insulating plate 521 and the second insulating plate 522 is more conducive to the penetration of the starting section 43 and the last section 44 than a whole insulating plate, and is more conducive to installation.

[0064] In this embodiment, sealing rings 53 are provided at the first through hole 5211 and the second through hole 5221, thereby preventing air leakage at the first through hole 5211 and the second through hole 5221 and improving the heat dissipation efficiency of the reactor 40. The edges of the first insulating plate 521 and the second insulating plate 522 are provided with at least two walls that fit each other, thereby improving the strength of the first insulating plate 521 and the second insulating plate 522 and preventing the insulating member 52 from breaking when being fixedly connected to the metal cover 51, thereby improving the stability of the reactor assembly.

[0065] In this embodiment, the bottom end of the protective cover 50 is fixedly connected to the bottom wall 11 and is provided with a vent. The reactor assembly is further provided with a support portion 60 fixedly connected to the bottom of the reactor 40. The support portion 60 is fixedly connected to the bottom wall 11 so that the reactor 40 is suspended from the bottom wall 11, thereby preventing the vent of the reactor 40 from being blocked by the bottom wall 11, improving the heat dissipation efficiency, and raising the reactor 40, which is beneficial to improving the waterproof and dustproof effect of the reactor 40. In addition, it is also beneficial to shorten the wiring distance between the first lead terminal 432 and the first electrical connection terminal 21, and the wiring distance between the second lead terminal 442 and the second electrical connection terminal 31, further avoiding the interference between the first lead terminal 432 and the second lead terminal 442.

[0066] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A reactor assembly for an electrical cabinet, the electrical cabinet comprising a cabinet body (10) and a first electrical component (20) and a second electrical component (30) disposed in the cabinet body (10), the first electrical component (20) being located above the second electrical component (30) and being provided with a first electrical connection terminal (21), the second electrical component (30) being provided with a second electrical connection terminal (31); the reactor assembly being disposed at the bottom of the cabinet body (10) and being arranged along a horizontal X-axis direction with the second electrical component (30); the reactor assembly comprising a reactor (40) and a protective cover (50) disposed outside the reactor (40), the reactor (40) being electrically connected to both the first electrical connection terminal (21) and the second electrical connection terminal (31), wherein: The reactor (40) is provided with a coil winding (42), and the coil winding (42) is provided with a starting section (43) close to the first electrical connection terminal (21) and an ending section (44) close to the second electrical connection terminal (31), the starting section (43) penetrates the protective cover (50) and the part extending outside the protective cover (50) forms a first lead terminal (432) suitable for being electrically connected to the first electrical connection terminal (21), and the ending section (44) penetrates the protective cover (50) and the part extending outside the protective cover (50) forms a second lead terminal (442) suitable for being electrically connected to the second electrical connection terminal (31).

2. A reactor assembly according to claim 1, characterized in that: The first electrical connection terminal (21) and the second electrical connection terminal (31) are both close to a first side of the protective cover (50) along the X-axis direction; and the starting section (43) and the ending section (44) are close to each other along the vertical direction.

3. A reactor assembly as claimed in claim 2, characterized in that: The protective cover (50) comprises a cover body (51) and an insulating member (52); the cover body (51) is provided with an opening (511), and the insulating member (52) covers the opening (511); the starting section (43) and the ending section (44) both pass through the insulating member (52).

4. A reactor assembly as claimed in claim 3, characterized in that: The distance between the first lead terminal (432) and the second lead terminal (442) gradually increases in a direction away from the opening (511).

5. A reactor assembly as claimed in claim 4, characterized in that: The first lead terminal (432) extends in a vertical direction, and the second lead terminal (442) extends in an X-axis direction.

6. A reactor assembly as claimed in claim 5, characterized in that: The reactor (40) is provided with a magnetic core (41); the starting section (43) is provided with a first section (431) connected to a first lead terminal (432) as a whole, and the ending section (44) is provided with a second section (441) connected to a second lead terminal (442) as a whole; The bottom end of the first section (431) is closer to the magnetic core (41) than the bottom end of the second section (441); the second section (441) is inclined from bottom to top in a direction away from the magnetic core (41).

7. A reactor assembly as claimed in claim 6, characterized in that: The insulating member (52) comprises a first insulating plate (521) and a second insulating plate (522), wherein the first insulating plate (521) and the second insulating plate (522) are detachably fixed to each other and are detachably fixed to the cover body (51), the starting section (43) penetrates the first insulating plate (521) in the vertical direction, and the ending section (44) penetrates the second insulating plate (522) in the X-axis direction.

8. A reactor assembly according to claim 7, characterized in that: The first insulating plate (521) is provided with a first through hole (5211) for the starting section (43) to pass through, and the second insulating plate (522) is provided with a second through hole (5221) for the ending section (44) to pass through; the first through hole (5211) and the second through hole (5221) are both provided with sealing rings (53); the edges of the first insulating plate (521) and the second insulating plate (522) are both provided with at least two walls that fit each other.

9. A reactor assembly according to any one of claims 1 to 8, characterized in that: The cabinet (10) is provided with a bottom wall (11); the bottom end of the protective cover (50) is fixedly connected to the bottom wall (11) and is provided with a vent; the reactor assembly is also provided with a support portion (60) fixedly connected to the bottom of the reactor (40), and the support portion (60) is fixedly connected to the bottom wall (11) so that the reactor (40) is suspended on the bottom wall (11).

10. An electrical cabinet, characterized in that: The invention comprises a cabinet (10), a first electrical component (20), a second electrical component (30) and a reactor assembly as claimed in any one of claims 1 to 9; the first electrical component (20) and the second electrical component (30) are placed in the cabinet (10), the first electrical component (20) is located above the second electrical component (30) and is provided with a first electrical connection terminal (21), the second electrical component (30) is provided with a second electrical connection terminal (31), the reactor assembly is placed at the bottom of the cabinet (10) and is arranged along the horizontal X-axis direction with the second electrical component (30); the reactor assembly comprises a reactor (40) and a protective cover (50) arranged outside the reactor (40), and the reactor (40) is electrically connected to both the first electrical connection terminal (21) and the second electrical connection terminal (31).

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