Charger power module main transformer applying planar magnetic parts
By adopting planar magnetic parts design in the charger power module, the problems of large volume and poor heat dissipation performance of traditional vertical winding magnets are solved, miniaturization, integration and efficient heat dissipation of transformers are achieved, and the stability of the product is improved. and maintainability.
Patent Information
- Application Number
- CN202421016689.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-11
AI Technical Summary
Due to its large size, poor heat dissipation performance and high process difficulty, traditional vertical winding magnetic parts are difficult to meet the needs of modern electronic equipment for miniaturization, integration and efficient heat dissipation.
The planar magnetic component design is adopted, and the planar magnetic component is set between the upper frame and the lower frame, and the fixing is achieved by clamping between the bumps and the round holes. Combined with the detachable connection method of the insert assembly, the stability of the transformer is improved and Maintainability.
It effectively reduces the volume of the transformer, reduces process difficulty, improves product integration and heat dissipation performance, and enhances electromagnetic compatibility.
Smart Images
Figure CN222462538U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformer design, in particular to a main transformer of a charger power module using a planar magnetic component. Background Art
[0002] In the field of transformer design, traditional vertical winding magnetic parts have been widely used. However, it has several significant application defects:
[0003] First, due to their structural characteristics, traditional vertical winding magnetics occupy a large space. This bulky design not only increases the overall size of the transformer, but also limits its application in compact electronic devices. With the increasing miniaturization and integration of electronic devices, the requirements for transformer size are also getting higher and higher, and traditional vertical winding magnetics are obviously difficult to meet in this regard.
[0004] Secondly, the winding method of vertical winding magnetic parts leads to poor heat dissipation performance. Since the coil is tightly wound on the magnetic core, it is difficult to dissipate heat effectively, which can easily cause the transformer temperature to rise too high, affecting its stability and service life. In addition, the manufacturing process of traditional vertical winding magnetic parts is relatively complicated and costly. The number of turns, wire diameter and winding method of the coil need to be precisely controlled during the winding process to ensure the stable performance of the transformer.
[0005] Finally, vertical winding magnetic parts also have certain limitations in electromagnetic shielding and anti-interference. Since the coil is tightly wound on the magnetic core, it is easy to generate electromagnetic leakage and interference, which will have adverse effects on surrounding electronic equipment. Therefore, the main transformer of the charger power module adopts traditional vertical winding magnetic parts, which are large in size and have high process difficulty. Utility Model Content
[0006] The utility model aims to provide a main transformer of a charger power module using planar magnetic components, which can reduce the volume of the transformer, reduce the process difficulty, and improve the product integration.
[0007] To achieve the above purpose, the utility model provides the following solutions:
[0008] A main transformer for a charger power module using planar magnetic components comprises: an upper frame, a lower frame and two planar magnetic components; the two planar magnetic components are arranged between the upper frame and the lower frame; a first protrusion is installed at the bottom of the upper frame, and a second protrusion is installed at the top of the lower frame; a first circular hole is opened on the planar magnetic component located at the top, and the first circular hole is clamped with the first protrusion; a second circular hole is opened on the planar magnetic component located at the bottom, and the second circular hole is clamped with the second protrusion; a plug-in assembly is detachably connected between the two planar magnetic components.
[0009] Optionally, at least two groups of slots are provided on the planar magnetic component, and each group of slots is plugged into the plug-in assembly.
[0010] Optionally, the positions of the groups of slots are symmetrically arranged.
[0011] Optionally, the number of slots provided on the planar magnetic component is 4, and the number of the inserting piece components correspondingly is four.
[0012] Optionally, the planar magnetic component is composed of an iron core, a winding and a terminal, and the winding and the terminal are arranged on the same plane.
[0013] Optionally, the winding height of the planar magnetic component is 1 / 2 to 1 / 3 of the winding height of a traditional vertically wound magnetic component.
[0014] According to the specific embodiments provided by the utility model, the utility model discloses the following technical effects:
[0015] The utility model discloses a main transformer of a charger power module using planar magnetic parts, the main transformer comprises an upper frame, a lower frame and two planar magnetic parts; the two planar magnetic parts are arranged between the upper frame and the lower frame; a first convex block is installed at the bottom of the upper frame, and a second convex block is installed at the top of the lower frame; a first circular hole is opened on the planar magnetic part at the top, and the first circular hole is clamped with the first convex block; a second circular hole is opened on the planar magnetic part at the bottom, and the second circular hole is clamped with the second convex block; a plug-in assembly is detachably connected between the two planar magnetic parts. The utility model can reduce the volume of the transformer, reduce the difficulty of the process, and improve the integration of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0017] Figure 1 This is a structural diagram of the main transformer of the charger power module of the utility model;
[0018] Figure 2 This is a disassembled schematic diagram of the main transformer of the charger power module in this embodiment.
[0019] Figure numerals: 1, upper frame; 2, lower frame; 3, planar magnetic part; 4, plug-in assembly; 5, slot; 6, first protrusion; 7, second protrusion; 8, first circular hole; 9, second circular hole. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] The utility model aims to provide a main transformer of a charger power module using planar magnetic components, which can reduce the volume of the transformer, reduce the process difficulty, and improve the product integration.
[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0023] like Figure 1-Figure 2 As shown, the utility model provides a charger power module main transformer using a planar magnetic component 3, comprising: an upper frame 1, a lower frame 2 and two planar magnetic components 3; the two planar magnetic components 3 are arranged between the upper frame 1 and the lower frame 2; a first protrusion 6 is installed at the bottom of the upper frame 1, and a second protrusion 7 is installed at the top of the lower frame 2; a first circular hole 8 is opened on the planar magnetic component 3 located at the top, and the first circular hole 8 is clamped with the first protrusion 6; a second circular hole 9 is opened on the planar magnetic component 3 located at the bottom, and the second circular hole 9 is clamped with the second protrusion 7; a plug-in assembly 4 is detachably connected between the two planar magnetic components 3.
[0024] As a specific implementation, at least two groups of slots 5 are provided on the planar magnetic component 3 , each group of slots 5 is plugged into the plug-in component 4 , and the positions of each group of slots 5 are symmetrically arranged.
[0025] Furthermore, the number of slots 5 provided on the planar magnetic component 3 is four, and the number of the inserting piece components 4 is correspondingly four.
[0026] As a specific implementation, the planar magnetic component 3 is composed of an iron core, a winding and a terminal, and the winding and the terminal are arranged on the same plane. In addition, the winding height of the planar magnetic component 3 is 1 / 2 to 1 / 3 of the winding height of a traditional vertical winding magnetic component.
[0027] In this embodiment, the planar magnetic component 3 adopts a PCB planar magnetic component 3, model EE-884SG 1450, which has a low height, small volume, high power density, low leakage inductance, good heat dissipation, and can achieve full automatic production (low labor cost, good consistency, and predictable parasitic parameters).
[0028] The production can be fully automated, which means that the product has high consistency, can accurately control leakage inductance (LLC leakage inductance as resonant inductance, DAB leakage inductance as inductance), has good heat dissipation, and is particularly suitable for cold plate heat dissipation scenarios. With independent air ducts and liquid cooling, it has good pressure resistance and insulation characteristics, flexible processes, and is easy to achieve magnetic integration (matrix transformer, coupled inductor, transformer integrated inductor). The planar transformer using planar magnetics can reduce the volume by 1 / 2 to 2 / 3, and the adjustment of the formula power supply solution can significantly reduce the overall volume and weight of the module.
[0029] As a specific embodiment, the first solution for converting a traditional transformer into a planar transformer is as follows:
[0030] The height of the planar transformer is reduced to 1 / 3 while the area remains unchanged, and the heat sink is also reduced to 1 / 3 to 1 / 2. It is expected that the height can be reduced by 1 / 2 and the volume can be reduced by 50% while the module plane remains unchanged.
[0031] As another specific embodiment, the second solution for converting a traditional transformer into a planar transformer is as follows:
[0032] The height of the planar transformer is reduced to 1 / 3 while the area remains unchanged. The heat sink is also reduced to 1 / 3 and is flatly attached to the heat dissipation surface of the planar transformer, or placed on the gap of the transformer. It is expected to reduce the height by 1 / 4 to 1 / 3, the area by 40%, and the overall volume by 50%.
[0033] This embodiment has the following beneficial effects:
[0034] First, by placing the planar magnetic component between the upper frame and the lower frame and fixing it by means of the clamping method of the bump and the round hole, the stability and reliability of the transformer are effectively improved. Compared with the traditional vertical winding magnetic component, the design of the planar magnetic component significantly reduces the overall size, making it more suitable for the miniaturization and integration requirements of modern electronic equipment.
[0035] Secondly, the detachable connection between the slots and the plug-in assembly on the planar magnetic component not only improves the maintainability and replaceability of the transformer, but also makes the connection between the planar magnetic components more stable. By designing at least two groups of symmetrically arranged slots and corresponding plug-in assemblies, the structural strength and stability of the transformer are further enhanced.
[0036] In addition, the planar magnetics are composed of iron cores, windings and terminals, and the windings and terminals are arranged on the same plane. This flat design not only improves the heat dissipation performance, but also optimizes electromagnetic compatibility. The winding height of the planar magnetics is only 1 / 2 to 1 / 3 of the winding height of the traditional vertical winding magnetics, which significantly reduces the volume and weight of the transformer, making it lighter, easier to install and use.
[0037] In summary, the main transformer of the charger power module using planar magnetic components provided by the utility model has the advantages of compact structure, high stability, good maintainability, excellent heat dissipation performance and strong electromagnetic compatibility, which is of great significance for improving the performance and reliability of the charger power module.
[0038] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0039] This article uses specific examples to illustrate the principle and implementation of the utility model. The above examples are only used to help understand the core idea of the utility model. At the same time, for those skilled in the art, according to the idea of the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the utility model.
Claims
1. A main transformer of a charger power module using planar magnetic components, characterized in that: include: An upper frame, a lower frame and two planar magnetic parts; the two planar magnetic parts are arranged between the upper frame and the lower frame; a first protrusion is installed at the bottom of the upper frame, and a second protrusion is installed at the top of the lower frame; a first circular hole is opened on the planar magnetic part located at the top, and the first circular hole is clamped with the first protrusion; a second circular hole is opened on the planar magnetic part located at the bottom, and the second circular hole is clamped with the second protrusion; a plug-in assembly is detachably connected between the two planar magnetic parts.
2. The main transformer of the charger power module using planar magnetic components according to claim 1, characterized in that: At least two groups of slots are provided on the planar magnetic component, and the two groups of slots are plugged into the plug-in component.
3. The main transformer of the charger power module using planar magnetic components according to claim 2, characterized in that: The positions of the two groups of slots are symmetrically arranged.
4. The main transformer of the charger power module using planar magnetic components according to claim 1, characterized in that: The number of slots provided on the planar magnetic component is 4, and the number of the inserting piece components correspondingly is four.
5. The main transformer of the charger power module using planar magnetic components according to claim 1, characterized in that: The planar magnetic component is composed of an iron core, a winding and a connection terminal, and the winding and the connection terminal are arranged on the same plane.
6. The main transformer of the charger power module using planar magnetic components according to claim 1, characterized in that: The winding height of the planar magnetic component is 1 / 2 to 1 / 3 of the winding height of the traditional vertical winding magnetic component.