Multi-strand winding inductor
By using a multi-strand wound inductor design and a stranded wire structure, the problem of excessive heat generation in traditional inductors at high frequencies is solved, achieving efficient and stable operation of the inductor and improving energy conversion efficiency.
Patent Information
- Application Number
- CN202423243424.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional inductors generate a lot of heat when operating at high frequencies, making it difficult for them to function properly. Furthermore, existing heat dissipation measures are inefficient, affecting the inductor's performance and efficiency.
The design employs a multi-strand wound inductor, increasing the core size and the number of wire turns. It uses multi-strand wires with a twisted structure, combined with insulation layers made of polyester and polytetrafluoroethylene, to reduce heat generation and improve the uniformity of current distribution.
It effectively reduces heat generation in inductors at high frequencies, improves inductor performance and efficiency, reduces energy loss, and enhances magnetic coupling efficiency and inductance stability.
Smart Images
Figure CN223857994U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the inductance field, concretely is a kind of multi-strand winding inductance. BACKGROUND
[0002] Gallium nitride power supply is a kind of new power supply using gallium nitride material to manufacture power device, gallium nitride material has the characteristics of high electron mobility, which makes the power device in power supply can work at high frequency, high frequency work allows to use smaller size transformer and inductance and other magnetic components, so that the overall volume of power supply is significantly reduced, let charger device be more small and portable, while gallium nitride power supply at high frequency is lower, greatly improves energy conversion efficiency, thereby reducing the energy waste generated when gallium nitride power supply transmits voltage.
[0003] Inductance is a kind of element that can convert electrical energy into magnetic energy and store it, usually composed of magnetic core and wire wound on the magnetic core, the size of the magnetic core in traditional inductance is 10.8mm in diameter, 4.6mm in diameter, and 4.6mm in height, and the winding coil of traditional inductance usually adopts single-strand wire, so that the traditional inductance magnetic core can wind 16.5 turns of wire, because single-strand wire in high-frequency working state, the current in the wire tends to distribute on the surface of the conductor, resulting in the decrease of the effective cross-sectional area of the conductor, which makes the resistance of the conductor increase at high frequency relative to the direct current resistance, and the heat generated by the increase of inductance resistance is more, and a small number of inductance adopts multi-strand winding method, although this multi-strand winding method can increase the equivalent cross-sectional area of wire and reduce the resistance in inductance, but multi-strand winding also leads to the increase of wire diameter, resulting in fewer turns of wire on the inductance magnetic core, and a large amount of heat is still generated during the operation of multi-strand inductance, in the process of gallium nitride power supply working, inductance will generate heat due to current passing and magnetic core loss, in order to ensure the normal work of inductance, usually pad heat-conducting glue and copper sheet on inductance to dissipate heat, to ensure the stable operation of gallium nitride power supply.
[0004] Although the heat-conducting glue and copper sheet laid on the inductance can conduct and dissipate the heat generated by the inductance, but the heat not timely conducted and dissipated on the inductance still has a certain influence on the working efficiency of the inductance, resulting in low working efficiency of inductance to convert electrical energy. UTILITY MODEL CONTENTS
[0005] Therefore, the utility model aims at providing a kind of multi-strand winding inductance to solve the technical problem that the heat generated during the operation of traditional inductance makes inductance difficult to be in normal working state.
[0006] To achieve the above object, the utility model provides the following technical scheme: A kind of multi-strand winding inductance, including magnetic core body, the outer wall of the magnetic core body is equipped with winding coil, and winding coil is wound in magnetic core body, the end of the winding coil is fixed with connecting block, the side of the connecting block is connected with pin, the inside of the winding coil is equipped with multiple groups of wires.
[0007] By adopting the above technical scheme, the size of the magnetic core body is set to an outer wall diameter of 11.3 mm, an inner wall diameter of 6.3 mm and a height of 4.8 mm, so that the overall size of the magnetic core body is larger than the conventional size. The inductance magnetic core with the conventional size can be wound with a coil of 16.5 turns, while the magnetic core body with the larger size can be wound with a winding coil of 14.5 turns while increasing the number of strands. Since the inductance under high-frequency working condition, the more turns the inductance magnetic core is wound with, the lower the heat generated by the inductance. Therefore, the magnetic core body increases the number of strands while ensuring a larger number of turns of the winding coil, so that the heat generated by the magnetic core body is greatly reduced, thereby realizing that the surface of the magnetic core body is not provided with heat-conducting glue and copper sheet for heat dissipation, and the magnetic core body can be in a normal working condition. At the same time, the magnetic core body with less heat generation improves the working performance and efficiency of the inductance as a whole.
[0008] The utility model further sets that the size of the magnetic core body is set to an outer diameter of 11.3 mm, an inner diameter of 6.3 mm and a height of 4.8 mm, and the number of turns of the winding coil wound on the magnetic core body is 14.5.
[0009] By adopting the above technical scheme, the magnetic core body with a size of an outer diameter of 11.3 mm, an inner diameter of 6.3 mm and a height of 4.8 mm has a larger overall size than the conventional inductance magnetic core with a size of an outer diameter of 10.8 mm, an inner diameter of 4.6 mm and a height of 4.6 mm, so that the number of turns of the winding coil wound on the magnetic core body is increased, thereby reducing the heat generated by the magnetic core body during operation.
[0010] The utility model further sets that the multiple groups of wires are twisted with each other, and the twisting between the multiple groups of wires can reduce the interference between the wires.
[0011] By adopting the above technical scheme, the twisting structure of the wires can increase the overall surface area of the wires, so that the current distribution is more uniform, thereby reducing the energy loss caused by resistance.
[0012] The utility model further sets that the magnetic core body is in the shape of a circular ring, and the surface of the magnetic core body is provided with an insulating coating.
[0013] By adopting the technical scheme, the circular annular magnetic core body helps to concentrate the magnetic field inside the magnetic core body in the inside of the magnetic core body, thereby reducing the magnetic field leakage of the magnetic core body, improving the magnetic coupling efficiency of the inductor, and enhancing the inductive capacity of the magnetic core body to current change, thereby improving the stability and accuracy of the inductance value.
[0014] The utility model further sets up, the outer wall of wire is provided with inner insulating layer, and inner insulating layer adopts polyester material quality.
[0015] By adopting the technical scheme, the inner insulating layer with polyester material quality has very high insulation performance, and the dielectric strength is high, so that the inner insulating layer can withstand a certain voltage without being punctured, thereby making the inner insulating layer wrapped on the outer wall of the wire can effectively prevent the wire from leaking.
[0016] The utility model further sets up, the outer wall of inner insulating layer is wrapped with insulating shell, and insulating shell adopts polytetrafluoroethylene material quality.
[0017] By adopting the technical scheme, the insulating shell with polytetrafluoroethylene material quality can effectively reduce the loss generated by current transmission under the high-frequency working state of the winding coil, because the friction coefficient of polytetrafluoroethylene material quality is low, and the winding coil can be conveniently wound on the magnetic core body by production personnel.
[0018] The utility model further sets up, connecting block is set up as taper, and the end of connecting block is connected with pin.
[0019] By adopting the technical scheme, the taper connecting block is installed at the head and tail end of the winding coil, and the pin is in current communication with the winding coil through the connecting block, and the installation of the connecting block makes the pin stably connected with the winding coil.
[0020] In summary, the utility model mainly has the following beneficial effects:
[0021] 1. The utility model discloses a magnetic core body, winding coil, connecting block and pin are set up, solved the heat that traditional inductance produced in the operation process causes inductance to be difficult in normal working state's technical problem, the size of magnetic core body is set up as the outer wall diameter 11.3mm, the inner wall diameter 6.3mm, height 4.8mm makes the overall size of magnetic core body greater than the conventional size, and the inductance magnetic core of conventional size size can be wound 16.5 turns of coil, and the magnetic core body of larger size can be wound 14.5 turns of winding coil while increasing the multiple wire, because the inductance under the inductance of high frequency condition working state, the more turns of coil that inductance magnetic core winds, the lower heat that inductance produces, therefore the magnetic core body increases the multiple wire while guaranteeing the multiple turns of winding coil, make the heat that magnetic core body produces reduce greatly, thereby realize the surface of magnetic core body not to set up the heat conduction glue and pad copper skin to carry out the heat dissipation, also can make the magnetic core body in normal working state, and the magnetic core body that produces less heat makes the working performance and efficiency of inductance whole improve;
[0022] 2. The utility model discloses a winding coil, wire, inner insulator and insulating shell are set up, winding coil inside adopts multiple wires, and multiple wires are stranded between, form stranded wire group, traditional inductance wire usually adopts single -stranded, in order to satisfy the design demand of inductance, single -stranded wire sets up larger diameter to the single -stranded wire overall hardness is larger, inconveniently winding single -stranded wire on inductance magnetic core, and the winding coil that stranded is formed adopts multiple smaller diameter wires in its inside, make winding coil can easily be wound on magnetic body, in addition, the stranded structure of wire can increase the overall surface area of wire, make current distribution more evenly, thereby reduce the energy loss of inductance. ACCURACY OF DRAWINGS
[0023] Figure 1 It is the whole schematic diagram of the device of the utility model;
[0024] Figure 2 It is the whole plan view of the device of the utility model;
[0025] Figure 3 It is the structure diagram of the magnetic core body of the utility model;
[0026] Figure 4 It is the sectional view of the winding coil of the utility model.
[0027] In the drawing: 1, magnetic core body;2, winding coil;21, wire;22, inner insulating layer;23, insulating shell;3, pin;4, connecting block. DETAILED DESCRIPTION
[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0029] The embodiments of this utility model will be described below based on its overall structure.
[0030] A type of multi-strand wire-wound inductor, such as Figure 1 - Figure 4 As shown, the device includes a magnetic core body 1, with a winding coil 2 mounted on the outer wall of the magnetic core body 1. The winding coil 2 is wound around the magnetic core body 1, and a connecting block 4 is fixed to the end of the winding coil 2. A pin 3 is connected to one side of the connecting block 4. Multiple sets of wires 21 are installed inside the winding coil 2. The dimensions of the magnetic core body 1 are set to an outer wall diameter of 11.3 mm, an inner wall diameter of 6.3 mm, and a height of 4.8 mm, making the overall size of the magnetic core body 1 larger than that of a conventional size. A conventionally sized inductor core can be wound with a coil of 16.5 turns, while the larger magnetic core body 1 can increase the number of turns. The multi-strand wire 21 can simultaneously wind a winding coil 2 with 14.5 turns. Due to the high-frequency operation of the inductor, the more turns the inductor core is wound, the lower the heat generated by the inductor. Therefore, while ensuring a large number of turns in the winding coil 2, the magnetic core body 1 also adds multi-strand wire 21, which greatly reduces the heat generated by the magnetic core body 1. This allows the magnetic core body 1 to operate normally without the need for thermal conductive adhesive and copper pads for heat dissipation. At the same time, the magnetic core body 1, which generates less heat, improves the overall working performance and efficiency of the inductor.
[0031] Please see Figure 2 and Figure 3 The core body 1 has an outer diameter of 11.3 mm, an inner diameter of 6.3 mm, and a height of 4.8 mm. The winding coil 2 has 14.5 turns wound on the core body 1. The core body 1 with an outer diameter of 11.3 mm, an inner diameter of 6.3 mm, and a height of 4.8 mm is larger than the traditional inductor core with an outer diameter of 10.8 mm, an inner diameter of 4.6 mm, and a height of 4.6 mm. This increases the number of turns of the winding coil wound on the core body 1, thereby reducing the heat generated by the core body 1 during operation.
[0032] Please see Figure 4 Multiple sets of conductors 21 are twisted together. Twisting multiple sets of conductors 21 can reduce interference between conductors 21. The twisted structure of conductors 21 can increase the overall surface area of conductors 21, making the current distribution more uniform, thereby reducing resistance and reducing energy loss.
[0033] Please see Figure 3The magnetic core body 1 is provided in a circular ring shape, the surface of the magnetic core body 1 is provided with an insulating coating, the magnetic core body 1 is provided in a circular ring shape, which helps to better concentrate the magnetic field inside the magnetic core body 1 inside the magnetic core body 1, thereby reducing the magnetic field leakage of the magnetic core body 1, improving the magnetic coupling efficiency of the inductor, and enhancing the inductive capacity of the magnetic core body 1 to current changes, thereby improving the stability and accuracy of the inductance value.
[0034] Please refer to Figure 4 The outer wall of the wire 21 is provided with an inner insulation layer 22, and the inner insulation layer 22 is made of polyester material. The inner insulation layer 22 made of polyester material has very high insulation performance and high dielectric strength, so that the inner insulation layer 22 can withstand a certain voltage without being punctured, so that the inner insulation layer 22 wrapped on the outer wall of the wire 21 can effectively prevent the wire 22 from leaking.
[0035] Please refer to Figure 4 The outer wall of the inner insulation layer 22 is provided with an insulating shell 23, and the insulating shell 23 is made of polytetrafluoroethylene material. The insulating shell 23 made of polytetrafluoroethylene material has a low friction coefficient, which facilitates the winding of the winding coil 2 on the magnetic core body 1, and the insulating shell 23 made of polytetrafluoroethylene material can effectively reduce the loss caused by current transmission under high-frequency working condition of the winding coil 2.
[0036] Please refer to Figure 2 The connecting block 4 is provided in a tapered shape, and the end of the connecting block 4 is connected with the pin 3. The tapered connecting block 4 is installed at the head and tail ends of the winding coil 2, and the pin 3 is in current communication with the winding coil 2 through the connecting block 4. The installation of the connecting block 4 enables the pin 3 to be stably connected with the winding coil 2.
[0037] The working principle of the utility model is that the size of the magnetic core body 1 is set as outer wall diameter 11.3mm, inner wall diameter 6.3mm, height 4.8mm, so that the overall size of the magnetic core body 1 is larger than the conventional size, the inductance magnetic core of the conventional size can be wound 16.5 turns of coil, and the magnetic core body 1 of larger size can wind 14.5 turns of winding coil 2 while increasing the multi-strand wire 21, because of the inductance under high frequency working condition, the more turns of the inductance magnetic core winding, the lower the heat generated by the inductance, so that the magnetic core body 1 generates heat greatly reduced while ensuring more turns of winding coil 2 and increasing multi-strand wire 21, the magnetic core body 1 generates heat greatly reduced, the winding coil 2 inside adopts multi-strand wire 21, and the multi-strand wire 21 is twisted, forming a twisted wire group, the conventional inductance wire usually adopts single strand, in order to meet the design requirements of inductance, the single-strand wire is provided with larger diameter, so that the overall hardness of the single-strand wire is larger, which is not convenient for winding the single-strand wire on the inductance magnetic core, the winding coil 2 twisted by the multi-strand wire 21 with smaller diameter in the winding coil 2, so that the winding coil 2 can be easily wound on the magnetic body 1, in addition, the twisting structure of the wire 21 can increase the overall surface area of the wire 21, so that the current distribution is more uniform, thereby reducing the resistance and reducing the energy loss.
[0038] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.
Claims
1. A multi-filar wound inductance comprising a magnetic core body (1), characterized in that: The outer wall of the magnetic core body (1) is provided with a winding coil (2), and the winding coil (2) is wound on the magnetic core body (1), the end of the winding coil (2) is fixedly provided with a connecting block (4), one side of the connecting block (4) is connected with a pin (3), and the inside of the winding coil (2) is provided with a plurality of groups of wires (21).
2. A multi-filar wound inductor as claimed in claim 1, wherein: The size of the magnetic core body (1) is set to be 11.3mm in outer diameter, 6.3mm in inner diameter and 4.8mm in height, and the number of turns of the winding coil (2) wound on the magnetic core body (1) is 14.
5.
3. A multi-filar winding inductor as claimed in claim 1, wherein: The plurality of groups of wires (21) are twisted with each other, and the twisting of the plurality of groups of wires (21) can reduce the interference between the wires (21).
4. A multi-filar winding inductor as claimed in claim 1, wherein: The magnetic core body (1) is set to be a circular ring, and the surface of the magnetic core body (1) is provided with an insulating coating.
5. A multi-filar winding inductor as claimed in claim 1, wherein: The outer wall of the wire (21) is provided with an inner insulation layer (22), and the inner insulation layer (22) is made of polyester material.
6. A multi-filar coil inductor as claimed in claim 5, wherein: The outer wall of the inner insulation layer (22) is provided with an insulating shell (23), and the insulating shell (23) is made of polytetrafluoroethylene material.
7. A multi-filar winding inductor as claimed in claim 1, wherein: The connecting block (4) is set to be a taper, and the end of the connecting block (4) is connected with the pin (3).