Rectifier and transformer thereof

Abstract

The utility model provides a rectifier and a transformer thereof, the transformer is installed in the rectifier, the transformer comprises an annular magnetic core and a coil wound on the magnetic core, a center hole of the magnetic core is provided with a conductive core along the axial direction in a penetrating manner, and two ends of the conductive core are respectively provided with a conductive plate. The current-conducting plates are used for being fixedly and electrically connected with a first radiator and a second radiator of the rectifier correspondingly, and after the current-conducting plates are fixedly connected with the first radiator and the second radiator correspondingly, the central axis of the magnetic core is perpendicular to the plane where the first radiator and the second radiator are located. After the current-conducting plate of the transformer is correspondingly and fixedly connected with the first radiator and the second radiator, the central axis of the magnetic core is perpendicular to the plane where the first radiator and the second radiator are located, the direction of a magnetic field relative to a rectifier case can be changed, the case is prevented from being located in an area with large magnetic flux, and the service life of the transformer is prolonged. And the case is prevented from generating an eddy current phenomenon.

Description

Technical Field

[0001] The utility model relates to the technical field of rectifiers, and particularly relates to a rectifier and a transformer thereof. Background Art

[0002] With the development of intelligent automation in industrial production and household life, more and more electrical appliances have entered our lives. The common operation of these electrical appliances requires a stable voltage to ensure their normal operation, and transformers are often used to transform voltage or current. A transformer is a device that changes alternating voltage based on the principle of electromagnetic induction, and its main components are a primary coil, a secondary coil, and a magnetic core.

[0003] During the operation of the transformer in the existing rectifier, its coil will generate a high-frequency alternating electromagnetic field. The transformer is usually installed between the positive and negative radiators, and the axial direction of the magnetic core of the transformer is parallel to the length direction of the positive and negative radiators. In this way, the magnetic lines of force can easily penetrate the shell of the rectifier, resulting in obvious heating of the shell due to electromagnetic induction and causing a large amount of losses. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a rectifier and a transformer thereof, which solve the problem that the axial direction of the magnetic core of the transformer in the existing rectifier is parallel to the length direction of the positive and negative radiators, so that the magnetic lines of force can easily penetrate the shell of the rectifier, resulting in obvious heating of the shell due to electromagnetic induction and causing a large amount of losses.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] On the one hand, a transformer of the utility model includes an annular magnetic core and a coil wound around the magnetic core. A conductive core is axially penetrated through the central hole of the magnetic core, and conductive plates are respectively arranged at both ends of the conductive core. The conductive plates are respectively used to be fixedly and electrically connected to the first radiator and the second radiator of the rectifier. After the conductive plates are fixedly connected to the first radiator and the second radiator respectively, the central axis of the magnetic core is perpendicular to the plane where the first radiator and the second radiator are located.

[0007] Preferably, the conductive core includes a first electric core and a second electric core, and the first electric core and the second electric core are insulated from each other. The conductive plates include a first electric plate, a second electric plate, a third electric plate, and a fourth electric plate;

[0008] Both ends of the first electric core are respectively connected to the first electric plate and the second electric plate. The first electric plate is used to be electrically connected to the first radiator, and the second electric plate is used to be electrically connected to the second radiator;

[0009] Both ends of the second battery cell are respectively connected to the third electrode plate and the fourth electrode plate. The fourth electrode plate is used for electrically connecting to the first radiator, and the third electrode plate is used for electrically connecting to the second radiator.

[0010] Further preferably, the first electrode plate includes a first horizontal plate, a first vertical plate, and a second horizontal plate that are sequentially connected. The fourth electrode plate includes a third horizontal plate, a second vertical plate, and a fourth horizontal plate that are sequentially connected. The first horizontal plate and the third horizontal plate are respectively used for connecting to the output copper bars of one of the synchronization modules of the rectifier, and both achieve electrical connection to the first radiator through the connection with the output copper bars of the synchronization module.

[0011] Even more preferably, the first horizontal plate is provided with a first through hole, and the first through hole is directly opposite to the fastening screw position at the central position of the output copper bar corresponding to the first electrode plate.

[0012] The third horizontal plate is provided with a second through hole, and the second through hole is directly opposite to the fastening screw position at the central position of the output copper bar corresponding to the fourth electrode plate.

[0013] Even more preferably, the first through hole is recessed from the outer side of the first horizontal plate to the other side, and the second through hole is recessed from the outer side of the third horizontal plate to the other side.

[0014] Even more preferably, the first horizontal plate is further provided with more than two third through holes, and the third through holes are symmetrically located on both sides of the first through hole. The first electrode plate is screwed to the corresponding output copper bar through the third through holes; and / or,

[0015] The third horizontal plate is further provided with more than two fourth through holes, and the fourth through holes are symmetrically located on both sides of the second through hole. The fourth electrode plate is screwed to the corresponding output copper bar through the third through holes.

[0016] Further preferably, the first battery cell and the second battery cell are made of aluminum, and / or the cross-sections of the first battery cell and the second battery cell are both semi-circular.

[0017] Further preferably, the axial length of the second battery cell is greater than the axial length of the first battery cell. One end of the first battery cell and the second battery cell is located on the same plane, and the plane is perpendicular to the axes of the first battery cell and the second battery cell; the second electrode plate is provided with a through hole for the second battery cell to pass through, and the second electrode plate and the fourth electrode plate are spaced apart along the axial direction of the second battery cell.

[0018] Even more preferably, the end faces at both ends of the first battery cell are flush with the upper and lower end faces of the coil.

[0019] On the other hand, the present utility model provides a rectifier, which includes a chassis. Inside the chassis, a first radiator and a second radiator are arranged side by side and at intervals. At least one of the aforementioned transformers is arranged between the first radiator and the second radiator. At least one synchronization module is arranged at intervals along the length direction of the upper surface and the lower surface of the first radiator. The synchronization modules on the upper surface and the lower surface of the first radiator correspond to the transformers one by one.

[0020] The beneficial effects of the transformer according to the present utility model compared with the prior art are mainly reflected in:

[0021] The two ends of the conductive core of the present utility model are respectively provided with the conductive plates. The transformer is fixedly and electrically connected to the first radiator and the second radiator of the rectifier through the conductive plates. After the conductive plates are fixedly connected to the first radiator and the second radiator correspondingly, the central axis of the magnetic core is perpendicular to the plane where the first radiator and the second radiator are located. In this way, the direction of the magnetic field generated by the coil relative to the rectifier chassis can be changed, avoiding the chassis being located in an area with a large magnetic flux, preventing a large number of magnetic lines of force from penetrating the chassis and generating eddy current phenomena. Furthermore, the heat generation of the chassis and the energy loss are greatly reduced. Therefore, it can be used to solve the problem that in the existing rectifier, the axial direction of the magnetic core of the transformer is parallel to the length direction of the positive and negative radiators, making it easy for the magnetic lines of force to penetrate the shell of the rectifier, resulting in obvious heating of the shell due to electromagnetic induction and causing a large amount of losses. Moreover, the transformer in this embodiment is mainly composed of the magnetic core, the conductive core and the conductive plates, with a simple structure and convenient assembly.

[0022] The beneficial effects of the rectifier according to the present utility model compared with the prior art are mainly reflected in:

[0023] Since the present utility model adopts the above-mentioned transformer, the eddy current phenomenon of the chassis can be avoided. Therefore, the heat generation of the chassis is small, and the energy loss generated thereby is small. In addition, synchronization modules can be arranged at intervals along the length direction of the upper surface and the lower surface of the first radiator, so as to shorten the length of the radiator, reduce the internal resistance of the radiator, reduce the external dimensions of the rectifier, and multiple transformers can be arranged between the first radiator and the second radiator at the same time, meeting the requirements of high-power output. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] More specifically illustrated by the preferred embodiments of the present utility model shown in the drawings, the above-mentioned and other objects, features and advantages of the present utility model will become clearer. The same reference numerals in all the drawings indicate the same parts, and the drawings are not deliberately drawn to scale in actual size, with the emphasis on showing the gist of the present utility model.

[0025] Figure 1A three-dimensional structure diagram of a transformer provided by an embodiment of the present utility model;

[0026] Figure 2 A front view of a transformer provided by an embodiment of the present utility model;

[0027] Figure 3 An exploded structure diagram of a transformer provided by an embodiment of the present utility model;

[0028] Figure 4 An internal structure diagram of a rectifier provided by an embodiment of the present utility model;

[0029] Description of the drawings: magnetic core 1, coil 2, conductive core 3, first core 301, first core 302, first radiator 4, second radiator 5, first electrode plate 6, first horizontal plate 601, first vertical plate 602, second horizontal plate 603, first through hole 604, third through hole 605, second electrode plate 7, third electrode plate 8, fourth electrode plate 9, third horizontal plate 901, second vertical plate 902, fourth horizontal plate 903, second through hole 904, fourth through hole 905, through hole 10, synchronization module 11. Detailed implementation manners

[0030] The technical solution of the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it. However, the embodiments cited do not limit the present utility model. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0031] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated with it, or there may be an intermediate element at the same time. The terms "installation", "one end", "the other end" and similar expressions used in the present utility model are only for the purpose of illustration.

[0032] This embodiment provides a transformer, which is installed in a rectifier, as Figures 1 to 3As shown in the figure, it includes an annular magnetic core 1 and a coil 2 wound around the magnetic core 1. A conductive core 3 is axially penetrated through the central hole of the magnetic core 1. Conductive plates are respectively arranged at both ends of the conductive core 3, and the conductive plates are respectively used to be fixedly and electrically connected to the first radiator 4 and the second radiator 5 of the rectifier. After the conductive plates are fixedly connected to the first radiator 4 and the second radiator 5 respectively, the central axis of the magnetic core 1 is perpendicular to the plane where the first radiator 4 and the second radiator 5 are located.

[0033] In the utility model, conductive plates are respectively arranged at both ends of the conductive core 3. The transformer is fixedly and electrically connected to the first radiator 4 and the second radiator 5 of the rectifier through the conductive plates. After the conductive plates are fixedly connected to the first radiator 4 and the second radiator 5 respectively, the central axis of the magnetic core 1 is perpendicular to the plane where the first radiator 4 and the second radiator 5 are located. In this way, the direction of the magnetic field generated by the coil 2 relative to the rectifier chassis can be changed, avoiding the chassis being located in an area with a large magnetic flux, preventing a large number of magnetic lines of force from penetrating the chassis and generating eddy current phenomena, thereby significantly reducing the heat generation and energy loss of the chassis. Therefore, it can be used to solve the problem that in the existing rectifier, the axial direction of the magnetic core 1 of the transformer is parallel to the length directions of the positive and negative radiators, making it easy for the magnetic lines of force to penetrate the outer shell of the rectifier, resulting in obvious heating of the outer shell due to electromagnetic induction and causing a large amount of losses. Moreover, the transformer in this embodiment is mainly composed of a magnetic core 1, a conductive core 3, and conductive plates, with a simple structure and convenient assembly.

[0034] In a specific embodiment, as Figure 1 shown, the conductive core 3 includes a first electric core 301 and a second electric core 302, and the first electric core 301 and the second electric core 302 are insulated from each other. The conductive plates include a first electric plate 6, a second electric plate 7, a third electric plate 8, and a fourth electric plate 9. Specifically, a gap can be set between the first electric core 301 and the second electric core 302 to achieve insulation, and the gap value is preferably 1 mm to 1.5 mm. Insulating glue can also be further filled in this gap to improve the insulation performance.

[0035] Both ends of the first electric core 301 are respectively connected to the first electric plate 6 and the second electric plate 7. The first electric plate 6 is used to be electrically connected to the first radiator 4, and the second electric plate 7 is used to be electrically connected to the second radiator 5. Both ends of the second electric core 302 are respectively connected to the third electric plate 8 and the fourth electric plate 9. The fourth electric plate 9 is used to be electrically connected to the first radiator 4, and the third electric plate 8 is used to be electrically connected to the second radiator 5.

[0036] In this embodiment, when an alternating current is applied to the coil 2, an alternating magnetic flux is generated in the magnetic core 1, and voltages or currents are induced in the first electrode 6, the second electrode 7, the third electrode 8, and the fourth electrode 9. The first electrode 6, the first battery core 301, and the second electrode 7 are electrically connected in sequence to form a circuit, and the third electrode 8, the second battery core 302, and the fourth electrode 9 are electrically connected in sequence to form another circuit. Preferably, the first battery core 301 and the second battery core 302 are made of aluminum. They are not prone to heat generation after inductance and have a relatively lower cost compared to copper. Of course, inductors made of copper or the like can also be selected. The cross-sections of the first battery core 301 and the second battery core 302 are preferably semi-circular, so that the cross-sectional area can reach the maximum and large currents can be allowed to pass through.

[0037] In a preferred embodiment, the first electrode 6 includes a first horizontal plate 601, a first vertical plate 602, and a second horizontal plate 603 that are connected in sequence. The fourth electrode 9 includes a third horizontal plate 901, a second vertical plate 902, and a fourth horizontal plate 903 that are connected in sequence. The first horizontal plate 601 and the third horizontal plate 901 are respectively used to connect to the output copper bars of one of the synchronization modules of the rectifier, and are electrically connected to the first radiator 4 through the connections to the output copper bars of the synchronization modules. The transformer in this embodiment can be connected to two synchronization modules simultaneously. Preferably, the first electrode 6 and the fourth electrode 9 are both integrally formed flanging plates.

[0038] In a further preferred embodiment, as Figure 3 shown, the first horizontal plate 601 is provided with a first through hole 604, and the first through hole 604 is aligned with the fastening screw position at the center of the output copper bar corresponding to the first electrode 6; the third horizontal plate 901 is provided with a second through hole 904, and the second through hole 904 is aligned with the fastening screw position at the center of the output copper bar corresponding to the fourth electrode 9. In this way, when installing the fastening screws at the center position of the synchronization module, the installation tool can pass through the first through hole 604 and abut against the surface of the first horizontal plate 601 on both sides of the first through hole 604, or the installation tool can pass through the second through hole 904 and abut against the surface of the third horizontal plate 901 on both sides of the second through hole 904 to implement fastening. On the one hand, this facilitates the installation of the fastening screws, and on the other hand, uniform pressure can be applied to the surface of the first horizontal plate 601 on both sides of the first through hole 604 and the surface of the third horizontal plate 901 on both sides of the second through hole 904, so as to promote uniform contact and fit between the first electrode 6 and the fourth electrode 9 and the corresponding synchronization module output copper bars.

[0039] In a further preferred embodiment, the first through hole 604 is recessed from the outer side of the first horizontal plate 601 to the other side, and the second through hole 904 is recessed from the outer side of the third horizontal plate 901 to the other side. This can appropriately increase the hole area and facilitate the placement of the fastening screws and the installation tool.

[0040] In a further preferred embodiment, the first transverse plate 601 is further provided with two or more third through holes 605 at intervals, the third through holes 605 are symmetrically located on both sides of the first through hole 604, and the first electrode plate 6 is screw-connected to the corresponding output copper strip through the third through hole 605; the third transverse plate 901 is further provided with two or more fourth through holes 905 at intervals, the fourth through holes 905 are symmetrically located on both sides of the second through hole 904, and the fourth electrode plate 9 is screw-connected to the corresponding output copper strip through the third through hole 605. By symmetrically arranging the third through holes 605 on both sides of the first through hole 604 and symmetrically arranging the fourth through holes 905 on both sides of the second through hole 904, it can be ensured that the contact surfaces of the first electrode plate 6 and the fourth electrode plate 9 with the output copper bars of the corresponding synchronization modules are evenly attached, ensuring uniform current conduction.

[0041] In another preferred embodiment, the axial length of the second battery cell 302 is greater than the axial length of the first battery cell 301. One end of the first battery cell 301 and the second battery cell 302 is located in the same plane, and this plane is perpendicular to the axes of the first battery cell 301 and the second battery cell 302. In this way, after the first electrode plate 6 and the third electrode plate 8 are correspondingly connected to the first battery cell 301 and the second battery cell 302, the first electrode plate 6 and the third electrode plate 8 can be located in the same plane; the second electrode plate 7 is provided with a through hole 10 for the second battery cell 302 to pass through, and the second electrode plate 7 and the fourth electrode plate 9 are arranged at intervals along the axial direction of the second battery cell 302. In this way, on the premise of reasonably realizing the above arrangements of each electrode plate, relatively uniform current can be generated on each electrode plate. It should be noted that after the second battery cell 302 passes through the through hole 10, it needs to maintain a spacing distance from the inner edge of the through hole 10 to avoid electrical conduction. Further, the end faces at both ends of the first battery cell 301 are flush with the upper and lower end faces of the coil 2, so that the magnetic core 1 can be clamped by the first electrode plate 6, the second electrode plate 7 and the third electrode plate 8 at both ends of the conductive core, and the size of the transformer can be reduced as much as possible, reducing material consumption and avoiding waste.

[0042] An embodiment of a rectifier is also provided, as Figure 4 shown. The rectifier of this embodiment includes a chassis (not shown in the figure). The first radiator 4 and the second radiator 5 are arranged side by side and at intervals in the chassis. At least one of the above transformers is arranged between the first radiator 4 and the second radiator 5. At least one synchronization module is arranged at intervals along the length direction of the upper surface and the lower surface of the first radiator 4. The synchronization modules on the upper surface and the lower surface of the first radiator 4 correspond to the transformers one by one.

[0043] Since the above-mentioned transformer is adopted in the utility model, the eddy current phenomenon of the chassis can be avoided, so the heat generated by the chassis is small, and the resulting energy loss is small. Moreover, the synchronous modules can be arranged at intervals along the length direction on the upper surface and the lower surface of the first radiator 4, so that the length of the radiator can be shortened, the internal resistance of the radiator can be reduced, the external dimension of the rectifier can be reduced, and a plurality of transformers can be arranged between the first radiator 4 and the second radiator 5 at the same time, which can meet the requirements of high-power output.

[0044] In this specification, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely means that the first feature has a lower horizontal height than the second feature.

[0045] In the description of this specification, the description of reference terms such as "preferred embodiment", "another embodiment", "other embodiments" or "specific examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application.

Claims

1. A transformer installed in a rectifier, characterized in that: It includes an annular magnetic core and a coil wound on the magnetic core, a conductive core is arranged through the central hole of the magnetic core along its axial direction, conductive plates are arranged at both ends of the conductive core, the conductive plates are respectively used to fix and electrically connect with the first heat sink and the second heat sink of the rectifier, and after the conductive plates are fixedly connected with the first heat sink and the second heat sink, the central axis of the magnetic core is perpendicular to the plane where the first heat sink and the second heat sink are located.

2. The transformer according to claim 1, characterized in that: The conductive core includes a first battery core and a second battery core, the first battery core and the second battery core are insulated from each other, and the conductive plate includes a first battery plate, a second battery plate, a third battery plate and a fourth battery plate; Two ends of the first battery core are connected to the first electric plate and the second electric plate respectively, the first electric plate is used to be electrically connected to the first radiator, and the second electric plate is used to be electrically connected to the second radiator; Two ends of the second battery core are respectively connected to the third electric plate and the fourth electric plate, the fourth electric plate is used to be electrically connected to the first radiator, and the third electric plate is used to be electrically connected to the second radiator.

3. The transformer according to claim 2, characterized in that: The first electric board includes a first horizontal board, a first vertical board and a second horizontal board connected in sequence, and the fourth electric board includes a third horizontal board, a second vertical board and a fourth horizontal board connected in sequence. The first horizontal board and the third horizontal board are respectively used to connect to the output copper bar of one of the synchronization modules of the rectifier, and both are electrically connected to the first radiator through the connection with the output copper bar of the synchronization module.

4. The transformer according to claim 3, characterized in that: The first transverse plate is provided with a first through hole, and the first through hole is directly opposite to the fastening screw position at the center of the output copper bar corresponding to the first electric board; The third transverse plate is provided with a second through hole, and the second through hole is directly opposite to the fastening screw position at the center position of the output copper bar corresponding to the fourth electric board.

5. The transformer according to claim 4, characterized in that: The first through hole is recessed from the outer side of the first transverse plate to the other side, and the second through hole is recessed from the outer side of the third transverse plate to the other side.

6. The transformer according to claim 4, characterized in that: The first transverse plate is also provided with two or more third through holes at intervals, the third through holes are symmetrically located on both sides of the first through hole, and the first electric board is screwed to the corresponding output copper bar through the third through holes; and / or, The third transverse plate is also provided with two or more fourth through holes at intervals, and the fourth through holes are symmetrically located on both sides of the second through hole. The fourth electric plate is screw-connected to the corresponding output copper bar through the third through holes.

7. The transformer according to claim 2, characterized in that: The first battery core and the second battery core are made of aluminum, and / or the cross-sections of the first battery core and the second battery core are both semicircular.

8. The transformer according to claim 2, characterized in that: The axial length of the second battery cell is greater than the axial length of the first battery cell, one end of the first battery cell and the second battery cell are located in the same plane, and the plane is perpendicular to the axes of the first battery cell and the second battery cell; the second battery plate is provided with a through hole for the second battery cell to pass through, and the second battery plate and the fourth battery plate are arranged at intervals along the axial direction of the second battery cell.

9. The transformer according to claim 8, characterized in that: The end surfaces of both ends of the first battery core are flush with the upper and lower end surfaces of the coil.

10. A rectifier, comprising a chassis, wherein a first radiator and a second radiator are arranged side by side and at intervals in the chassis, characterized in that: At least one transformer as described in any one of claims 1 to 9 is arranged between the first heat sink and the second heat sink, and at least one synchronization module is arranged at intervals on the upper surface and the lower surface of the first heat sink along the length direction of the first heat sink, and the synchronization modules on the upper surface and the lower surface of the first heat sink correspond one-to-one to the transformer.

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