High-power magnetic combination DC transformer assembly
By sharing a core between the DC transformer core and the output inductor core, and by utilizing the core of an external magnetic component, the problems of large space occupation and high cost of existing DC transformer assemblies are solved, achieving the effects of product shortening and cost reduction.
Patent Information
- Application Number
- CN202520413131.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing DC transformer assembly designs are space-consuming and costly, mainly because the DC transformer and output inductor each use independent magnetic cores.
The DC transformer core and the output inductor core are designed to share a common core, and the core of external magnetic components is borrowed to form a closed magnetic circuit, thereby reducing the number of cores used.
By using a shared magnetic core design, the number of magnetic cores used is reduced, the product length is shortened, the space occupied and cost are reduced, and it is suitable for DC components of different power ratings.
Smart Images
Figure CN223911501U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to DC transformer, concretely relates to a high -power magnetic combination DC transformer subassembly. BACKGROUND
[0002] Most of the existing DC (direct current) transformer subassembly conventional design as shown in the figure, DC transformer, output inductance are independent, each uses a pair of magnetic core (left and right two pairs of buckle forms a pair), such as DC transformer adopts left and right two magnetic cores ① and ② buckle, output inductance adopts left and right two magnetic cores ③ and ④ buckle. Figure 1 The main defect of this design is that the space is large, and the cost is relatively high. UTILITY MODEL CONTENTS
[0003] Therefore, the utility model provides an improved high -power magnetic combination DC transformer subassembly to solve the problems of the prior art.
[0004] A kind of high -power magnetic combination DC transformer subassembly, including: DC transformer magnetic core, primary winding, secondary winding, output inductance magnetic core, output inductance winding and base;The primary winding and the secondary winding are assembled with the DC transformer magnetic core, the DC transformer magnetic core is in abutment with one side of the output inductance magnetic core, so that the primary winding and the secondary winding are located between the DC transformer magnetic core and the output inductance magnetic core, and are commonly constituted with the DC transformer magnetic core and the output inductance magnetic core DC transformer;The output inductance winding is assembled on the other side of the output inductance magnetic core, and the other side of the output inductance magnetic core is set to be able to butt joint with the magnetic core of an external magnetic element, so that the output inductance winding is commonly constituted with the output inductance magnetic core and the magnetic core of the external magnetic element output inductance;The DC transformer and the output inductance are fixed on the base, and the primary winding, the secondary winding and the output inductance winding are all wired from the base.
[0005] Further, the primary winding includes a plurality of coils, the secondary winding includes a plurality of copper sheets, and the copper sheets are configured to pass a large current.
[0006] Further, the plurality of coils and the plurality of copper sheets are interpenetrated and assembled on the DC transformer magnetic core.
[0007] Further, the copper sheet is bent at the top.
[0008] Further, it further includes: metal cooling fin, set on the DC transformer magnetic core, for leading away the heat generated by the DC transformer magnetic core.
[0009] Further, the metal cooling fin is adhered to the DC transformer magnetic core by heat-conducting adhesive.
[0010] Further, the output inductance winding is a flat coil and is configured to pass large current.
[0011] Further, the flat coil and the output inductance magnetic core are filled with a heat conducting block.
[0012] Further, the heat conducting block comprises a pair of ceramic heat conducting blocks symmetrically arranged in the gap formed between the flat coil and the output inductance magnetic core.
[0013] Further, the base is a plastic-encased copper bar base.
[0014] The beneficial effects of the technical scheme of the utility model are embodied in that: the technical scheme of the utility model, on the one hand, uses the magnetic core of the output inductance to form the DC transformer in the DC transformer assembly of the utility model together with the magnetic core of the DC transformer, the primary winding and the secondary winding; on the other hand, uses the magnetic core of the external magnetic element (for example, the magnetic core of the OBC transformer of the vehicle-mounted charger) to form the output inductance in the DC transformer assembly of the utility model together with the output inductance magnetic core and the output inductance winding. In this way, compared with the existing DC transformer assembly, the utility model can save the use of two magnetic cores, the length of the product is greatly shortened, and the occupied space and cost are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a conventional design of the existing DC transformer assembly.
[0016] Figure 2 is a structural schematic diagram of the high-power magnetic combination DC transformer assembly provided by the embodiment of the utility model.
[0017] Figure 3 is an exploded view of the high-power magnetic combination DC transformer assembly provided by the embodiment of the utility model.
[0018] Figure 4 is a schematic diagram of the assembly of the high-power magnetic combination DC transformer assembly and the OBC transformer provided by the embodiment of the utility model. DETAILED DESCRIPTION
[0019] The utility model will be further described below in combination with the drawings, specific implementation manners and embodiments. Meanwhile, it should be understood that the purpose of providing the embodiments is only for illustration, and is not intended to be limited in any way.
[0020] In addition, the space orientation words such as "upper", "lower", "left", "right", "top" and "bottom" used in the description of the technical scheme of the utility model are for the convenience of describing the relative position relationship between the product constituent components, and do not represent that the product only has the arrangement shown in the figure, and in the actual use process, the space related description used to describe the arrangement should also be interpreted in a similar way with the different arrangement of the product (for example, rotating 90 degrees or other orientations).
[0021] Please refer to Figure 2 and Figure 3 The utility model discloses a high -power magnetic combination DC transformer subassembly, comprising: DC transformer magnetic core 1, self -adhesive insulated wire coil 2, forming copper sheet 3, output inductance magnetic core 4, flat coil 5 and plastic -coated copper row base 6, wherein coil 2 is as primary winding, copper sheet 3 is as secondary winding and is assembled with DC transformer magnetic core 1, and DC transformer magnetic core 1 and one side of output inductance magnetic core 4 abut, so that coil 2 and copper sheet 3 are located between DC transformer magnetic core 1 and output inductance magnetic core 4, and are common to DC transformer with DC transformer magnetic core 1 and output inductance magnetic core 4 constitutes DC transformer;Flat coil 5 is as output inductance winding, and is assembled on the other side of output inductance magnetic core 4, and the other side of output inductance magnetic core 4 is set to be able to butt joint with the magnetic core of an external magnetic element, so that flat coil 5 and output inductance magnetic core 4 and the magnetic core of the external magnetic element commonly constitute output inductance;The DC transformer and the output inductance are all fixed on the base 6, and coil 2 (primary winding), copper sheet 3 (secondary winding) and flat coil 5 (output inductance winding) all lead out from the corresponding through -hole of the base 6, so that the DC transformer subassembly of the utility model embodiment is formed.
[0022] It should be understood that the primary winding is not limited to adopting the form of self-adhesive insulated wire coil, and can also adopt other forms of coil; the secondary winding is also not limited to adopting the form of forming copper sheet, and can also adopt other forms of winding capable of passing large current. Similarly, the winding of the output inductance is also not limited to adopting the form of flat coil. Those skilled in the art can make corresponding deformation and adjustment according to actual design requirements, and the utility model does not limit the primary winding, the secondary winding and the output inductance winding.
[0023] The primary winding of the DC transformer can include a plurality of coils 2, and the secondary winding can include a plurality of copper sheets 3. The copper sheet 3, as the secondary winding, can pass large current. For example, Figure 2 In the embodiment shown, the primary winding of the DC transformer includes three coils 2, and the secondary winding includes two groups of copper sheets 3. The coils 2 and the copper sheets 3 are mutually inserted and stacked and assembled on the magnetic core 1, and one group of copper sheets 3 is inserted between each adjacent two coils 2. It should be understood that, Figure 2For example only, the number of turns of the primary winding can be other than 3, and the number of copper sheets of the secondary winding can be other than 5, and the present application is not limited in this regard.
[0024] As shown in Fig. 1, the DC transformer comprises a base 6, a primary winding 2, a secondary winding 3, an output inductor 4, and a DC transformer magnetic core 1. Figure 3 In the preferred embodiment, the copper sheet 3 is bent at the top to increase the heat dissipation effect, as the secondary winding is used to pass large current.
[0025] In addition, metal heat sinks 7 are pasted on the opposite sides of the DC transformer magnetic core 1 using thermal conductive glue, so as to quickly conduct the heat on the magnetic core 1 to the heat dissipation cavity of the client.
[0026] In some embodiments, since the output inductor winding also passes large current, in order to increase the heat dissipation effect, as shown in Fig. 5, a thermal conductive block 8 is filled between the flat coil 5 and the output inductor magnetic core 4. Figure 3 The thermal conductive block 8 comprises a pair of profiled ceramic thermal conductive blocks, which are symmetrically arranged in the top gap formed between the flat coil 5 and the output inductor magnetic core 4. The profiled ceramic blocks are made according to the shape of the flat coil 5, especially the inner arc shape. In order to further increase the heat dissipation effect, thermal conductive glue can be applied to the gap and the ceramic blocks can be pasted into the gap.
[0027] The assembled DC transformer and output inductor are fixed to the base 6 to form a high-power magnetic combination DC transformer assembly, which can be combined with an OBC (on-board charger) transformer, as shown in Fig. 6. Figure 4 The blue boxed part represents the OBC transformer, and the red boxed part represents the DC transformer assembly of the present application. The core principle is that the DC transformer "borrows" the magnetic core of the output inductor, and the output inductor "borrows" the magnetic core of the OBC transformer, so as to form a closed magnetic circuit. In this way, the DC transformer assembly of the present application reduces the use of two magnetic cores compared with the prior art design, shortens the product length, greatly reduces the occupied space, and reduces the cost, which brings a one-stroke multi-benefit technical advantage. It is suitable for DC assemblies of different powers, such as 1-9KW, etc.
[0028] It should be understood that the use of the OBC transformer is only an example, and the DC transformer assembly of the present application can also be used with other magnetic elements, as long as the output inductor magnetic core is connected to the magnetic core of the other magnetic element to form a pair of magnetic cores.
[0029] In the present application, the form of the magnetic core of the DC transformer and the output inductor is not limited, which can be an EQ magnetic core, an ER magnetic core, an EE magnetic core, a UF magnetic core, a UU magnetic core, an EFD magnetic core, etc.
[0030] The above is further detailed description of the utility model in combination with specific preferred embodiments, and cannot be deemed as limitation of the specific implementation of the utility model to these descriptions. For the skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of equivalent substitutions or obvious variations can be made, and the performance or use is the same, which should be regarded as belonging to the protection scope of the utility model.
Claims
1. A high power magnetic assembly DC transformer assembly, characterized by, The application relates to a DC transformer, which comprises a DC transformer magnetic core, a primary winding, a secondary winding, an output inductor magnetic core, an output inductor winding and a base. The primary winding and the secondary winding are assembled with the DC transformer magnetic core, the DC transformer magnetic core abuts one side of the output inductor magnetic core, so that the primary winding and the secondary winding are located between the DC transformer magnetic core and the output inductor magnetic core and jointly form a DC transformer with the DC transformer magnetic core and the output inductor magnetic core. The output inductor winding is assembled on the other side of the output inductor magnetic core, and the other side of the output inductor magnetic core is arranged to be capable of abutting a magnetic core of an external magnetic element, so that the output inductor winding jointly forms an output inductor with the output inductor magnetic core and the magnetic core of the external magnetic element. The DC transformer and the output inductor are both fixed on the base, and the primary winding, the secondary winding and the output inductor winding are all led out from the base. The primary winding comprises a plurality of coils, the secondary winding comprises a plurality of copper sheets, and the copper sheets are arranged to be capable of passing large current.
2. The high power magnetic assembly DC transformer assembly of claim 1, wherein, The plurality of coils and the plurality of copper sheets are assembled on the DC transformer magnetic core.
3. The high power magnetic assembly DC transformer assembly of claim 2, wherein, The copper sheets are bent at the top.
4. The high power magnetic assembly DC transformer assembly of claim 2, wherein, The application further comprises:
5. A high power magnetic assembly DC transformer assembly as claimed in any one of claims 1 to 4, wherein, Metal heat dissipation fins arranged on the DC transformer magnetic core and used for conducting heat generated by the DC transformer magnetic core. The metal heat dissipation fins are adhered to the DC transformer magnetic core through heat-conducting adhesive.
6. The high power magnetic assembly DC transformer assembly of claim 5, wherein, The output inductor winding is a flat coil and is arranged to be capable of passing large current.
7. The high power magnetic assembly DC transformer assembly of claim 1, wherein, The flat coil and the output inductor magnetic core are filled with heat-conducting blocks.
8. The high power magnetic assembly DC transformer assembly of claim 7, wherein, The heat-conducting blocks comprise a pair of ceramic heat-conducting blocks which are symmetrically arranged in a gap formed between the flat coil and the output inductor magnetic core.
9. The high power magnetic assembly DC transformer assembly of claim 8, wherein, The base is a plastic-coated copper bar base.
10. The high power magnetic assembly DC transformer assembly of claim 1, wherein,