Novel integrated induction transformer for vehicle
By integrating the resonant inductor with the transformer, combining thermal conductive materials and high-reliability wires, the existing automotive inductor transformers have solved the problem of large land and poor heat dissipation, and an efficient and reliable miniaturized inductor transformer is achieved.
Patent Information
- Application Number
- CN202421311761.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The existing automotive inductor transformers have large footprints, large volumes, poor heat dissipation effects, and low reliability, making it difficult to meet the high reliability and miniaturization needs of automotive electronic components.
A new integrated inductor transformer for automobiles was designed to integrate the resonant inductor with the transformer. By setting the inductor core and air gap in the transformer core, the thermal ceramic sheet and thermal potting glue are used to improve the heat dissipation performance, and the coating line or three-layer insulated line is used to improve reliability.
It has achieved a reduction in the footprint and volume, improved heat dissipation performance and reliability, and is suitable for efficient applications of automotive electronic components.
Smart Images
Figure CN222672783U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to a novel integrated inductor transformer for vehicles. Background Art
[0002] High reliability, small size and light weight of products are the main development direction of various automotive electronic components. The existing solution for automotive inductor transformers is to connect the resonant inductor separately to the circuit, and then use the transformer for voltage transformation. It is a combination of two separate components, the resonant inductor and the transformer. The two components are connected to the mounting base separately. The installation requires a large area and volume, the steps are complicated, and the product has poor heat dissipation effect; its coil usually uses ordinary enameled wire, the skin effect is obvious at high frequency, and there is only one layer of paint protection, the product reliability is poor, and the risk of using it in automobiles is high. Utility Model Content
[0003] In view of the problems of large installation area, large volume and poor heat dissipation in the existing technical solutions, the utility model provides a new integrated inductor transformer for vehicles.
[0004] The utility model provides the following technical solution: a new integrated inductor transformer for a vehicle, comprising:
[0005] A transformer core, wherein the transformer core is provided with a first window, and an inner wall of the first window is provided with a groove;
[0006] An inductor core, wherein the inductor core is disposed in the groove, the inductor core is provided with a second window connected to the first window, and a distance is provided between an outer wall of the inductor core and the groove;
[0007] The windings include a resonant winding wound on the outer wall of the inductor core, and a primary winding and a secondary winding wound on the transformer core, and both the primary winding and the secondary winding pass through the first window and the second window.
[0008] Preferably, the transformer magnetic core comprises a first magnetic core and a second magnetic core which are sequentially arranged along the axial direction, and an air gap is arranged between the first magnetic core and the second magnetic core.
[0009] Preferably, the air gap is provided with a heat-conducting ceramic sheet.
[0010] Preferably, the air gap and the space between the transformer core and the resonant winding are filled with thermally conductive potting glue.
[0011] Preferably, the inductor core is an iron silicon powder core.
[0012] Preferably, the multiple turns of conductive wires of the primary winding and the secondary winding are evenly distributed around the central axis of the transformer core.
[0013] Preferably, the resonant winding, the primary winding and the secondary winding are made of coated wire or three-layer insulated wire.
[0014] The beneficial effects of the utility model are as follows: an inductor core winding is arranged in the middle of the transformer as a resonant inductor, which reduces the floor space and volume, has the characteristics of uniform air gap and uniform heating, high working efficiency, convenient for automated processing, and high production efficiency; a thermally conductive ceramic sheet and a thermally conductive potting glue can be used in the middle of the transformer core to conduct internal heat, and the transformer winding is in direct contact with the air to enhance the heat dissipation performance; the winding adopts a coated wire or a three-layer insulated wire to improve product reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model.
[0016] Figure 2 It is a cross-sectional view of an embodiment of the utility model.
[0017] Figure 3 A schematic diagram of an embodiment of a transformer core.
[0018] Figure 4 Schematic diagram of an embodiment of an inductor core.
[0019] Figure numerals: 10, transformer core; 11, first window; 12, first core; 13, second core; 14, air gap; 20, inductor core; 21, second window; 30, resonant winding; 40, primary winding; 50, secondary winding. DETAILED DESCRIPTION
[0020] The following is a more detailed description of the implementation of the utility model in conjunction with the drawings and the figure marks, so that those skilled in the art can implement it after reading this specification. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.
[0021] The utility model provides a new integrated inductor transformer for vehicles, which integrates the resonant inductor and the transformer into one, mainly to achieve the purpose of reducing the floor space required for installation. Figure 1-4 The inductor transformer includes a magnetic core and a winding, and the magnetic core includes a transformer magnetic core 10 and an inductor magnetic core 20.
[0022] The transformer core 10 is provided with a first window 11. In the present embodiment, the transformer core 10 is annular in structure as a whole, and a groove is provided on the inner wall of the first window 11, and an inductor core 20 is provided in the groove. The inductor core 20 is provided with a second window 21. In the present embodiment, the inductor core 20 may also adopt an annular structure, which is stuck at the opening of the groove, and the second window 21 is connected with the first window 11 for the primary and secondary windings of the transformer to pass through; a spacing is provided between the outer wall of the inductor core 20 and the groove, forming a space for accommodating the resonant winding, and the resonant winding 30 is wound on the outer wall of the inductor core 20. The transformer integrates the resonant inductor inside, which effectively reduces the footprint, volume and weight of the device. The utility model does not limit the shape and size of the transformer core and the inductor core, and can be adjusted according to actual needs.
[0023] Furthermore, the transformer core 10 includes a first core 12 and a second core 13 arranged in sequence along the axial direction. The cross-sections of the first and second cores are both stepped structures, and an air gap 14 is arranged between the two, which is convenient for processing, and the size of the air gap 14 can be adjusted to control the inductance. A thermally conductive ceramic sheet can be arranged in the air gap 14 to pad the air gap, and a thermally conductive potting compound is filled in the air gap 14 and between the transformer core 10 and the resonant winding 30 to conduct internal heat and improve the heat dissipation effect. The materials of the thermally conductive ceramic sheet and the thermally conductive potting compound can be selected according to the actual heat dissipation requirements.
[0024] The winding includes a resonant winding 30, a primary winding 40 and a secondary winding 50. The resonant winding 30 is wound on the outer wall of the inductor core 20 and is located between the inductor core 20 and the transformer core 10. The primary winding 40 and the secondary winding 50 are respectively wound on the transformer core 10 in a parallel winding manner, with small leakage inductance, which is conducive to electromagnetic shielding, and both the primary winding 40 and the secondary winding 50 pass through the first window 11 and the second window 21. In this embodiment, the cross-sectional area of the wire of the primary winding 40 is small, and the cross-sectional area of the wire of the secondary winding 50 is large, and the secondary winding 50 is wound on the outside of the primary winding 40. Preferably, the multiple turns of the wire of the primary winding 40 and the secondary winding 50 are evenly distributed around the central axis of the transformer core 10 and occupy the full width. The resonant winding 30, the primary winding 40 and the secondary winding 50 use coated wire or three-layer insulated wire to improve reliability.
[0025] The above are one or more embodiments of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A new integrated inductor transformer for vehicle, characterized in that: include: A transformer core, wherein the transformer core is provided with a first window, and an inner wall of the first window is provided with a groove; An inductor core, wherein the inductor core is disposed in the groove, the inductor core is provided with a second window connected to the first window, and a distance is provided between an outer wall of the inductor core and the groove; The windings include a resonant winding wound on the outer wall of the inductor core, and a primary winding and a secondary winding wound on the transformer core, and both the primary winding and the secondary winding pass through the first window and the second window.
2. The novel integrated inductor transformer for vehicle according to claim 1, characterized in that: The transformer magnetic core comprises a first magnetic core and a second magnetic core which are sequentially arranged along an axial direction, and an air gap is arranged between the first magnetic core and the second magnetic core.
3. The new integrated inductor transformer for vehicle according to claim 2, characterized in that: The air gap is provided with a heat-conducting ceramic sheet.
4. The new integrated inductor transformer for vehicle according to claim 2, characterized in that: The air gap and the space between the transformer magnetic core and the resonant winding are all filled with heat-conducting potting glue.
5. The novel integrated inductor transformer for vehicle according to claim 1, characterized in that: The inductor magnetic core is an iron silicon powder core.
6. The novel integrated inductor transformer for vehicle according to claim 1, characterized in that: The multiple turns of the primary winding and the secondary winding are evenly distributed around the central axis of the transformer core.
7. The novel integrated inductor transformer for vehicle according to claim 1, characterized in that: The resonant winding, the primary winding and the secondary winding are made of coated wire or three-layer insulated wire.