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CN-224203918-U - 5KW low temperature rise planar transformer

CN224203918UCN 224203918 UCN224203918 UCN 224203918UCN-224203918-U

Abstract

The utility model is suitable for the related technical field of transformers, and provides a 5kW low-temperature-rise planar transformer which comprises a magnetic core, an output piece, a coil and a PCB, wherein the coil is positioned in the magnetic core, the coil is exposed to be in direct contact with air, the PCB is connected with the output piece, the PCB is combined with the coil, a base is external, the coil is exposed to be in direct contact with air to be easy to dissipate heat, eddy-current temperature rise generated by placing an air gap of the magnetic core on an open-loop side can be effectively taken away through an air channel, a flat copper foot is further designed as an output end to be beneficial to heat dissipation, the overall temperature of a product is lower than that of a traditional winding structure by 10-20 ℃, the materials used are simple, the assembly is convenient, the fluctuation of the performance of the product caused by inconsistent materials and manual operation can be greatly reduced, the product is easy to be produced automatically, the production efficiency is improved by 50% compared with the traditional method, and the labor cost can be reduced by 70%.

Inventors

  • XIAO GUO
  • ZHOU JIAHONG

Assignees

  • 资兴市慧华电子有限公司

Dates

Publication Date
20260505
Application Date
20250508

Claims (6)

  1. 1. The utility model provides a 5kW low temperature rise planar transformer, includes magnetic core (1), output piece (5) and is located coil (2) and PCB (4) in magnetic core (1), its characterized in that, coil (2) expose with air direct contact, PCB (4) are connected with output piece (5).
  2. 2. The 5kW low temperature rise planar transformer of claim 1, wherein the PCB (4) and coil (2) are alternately laminated four times to form a composite structure.
  3. 3. A 5kW low temperature rise planar transformer according to claim 1, characterized in that the output piece (5) is a flat copper foot.
  4. 4. A 5kW low temperature rise planar transformer according to claim 3, characterized in that the flat copper feet are connected to the PCB (4) by soldering.
  5. 5. A 5kW low temperature rise planar transformer according to claim 1, characterized in that the core (1) is of EI type construction and the air gap is provided on the open loop side.
  6. 6. The 5kW low temperature rise planar transformer of claim 1, wherein the magnetic core (1) is externally provided with a base (3) of unitary construction with the output piece (5).

Description

5KW low temperature rise planar transformer Technical Field The utility model relates to the technical field of transformers, in particular to a 5kW low-temperature-rise planar transformer. Background At present, the high-power transformers in the market all adopt the traditional winding mode, and because the traditional winding is tight and is wrapped by a framework, a baffle wall, an adhesive tape and the like, the temperature rise generated during the working of the transformer cannot be well emitted to the temperature of 130-140 DEG, the service life of the product can be influenced, and in addition, the product with the high-power winding structure can only be manufactured manually, and the automatic production cannot be realized, so that the production efficiency is low and the labor cost is high. Therefore, in view of the above situation, there is an urgent need to provide a 5kW low temperature rise planar transformer to overcome the shortcomings in the current practical application. Disclosure of utility model The utility model aims to provide a 5kW low-temperature-rise planar transformer and aims to solve the problems in the background technology. The utility model is realized in that the 5kW low-temperature-rise planar transformer comprises a magnetic core, an output piece, a coil and a PCB, wherein the coil and the PCB are positioned in the magnetic core, the coil is exposed to be in direct contact with air, and the PCB is connected with the output piece. As a further scheme of the utility model, the PCB and the coil are alternately laminated four times to form a composite structure, and the coupling between the primary and the secondary is enhanced by adopting the combination of the four times alternately, so that the product efficiency is improved. As a further scheme of the utility model, the output piece is a flat copper foot, the flat copper foot can be used as an output end to facilitate heat dissipation, and the overall temperature of the product is 10-20 ℃ lower than that of a traditional winding structure. As a further proposal of the utility model, the flat copper feet are connected with the PCB in a welding way. As a further scheme of the utility model, the magnetic core adopts an EI type structure, an air gap is arranged at the open-loop side, and eddy current temperature rise generated by placing the air gap of the magnetic core at the open-loop side can be effectively taken away through the air channel. As a further scheme of the utility model, the magnetic core is externally provided with the base which is integrated with the output piece, and the base and the output piece are integrated into a whole to achieve firm integral structure. Compared with the prior art, the utility model has the beneficial effects that: 1. the PCB and coil combination, the external base, the coil is exposed and is in direct contact with air, so that heat dissipation is easy. 2. The eddy current temperature rise is easy to release, and the eddy current temperature rise generated when the magnetic core air gap is placed on the open loop side can be effectively taken away through the air duct. 3. The temperature is low, flat copper feet are designed as output ends, heat dissipation can be facilitated, and the overall temperature of the product is 10-20 ℃ lower than that of a traditional winding structure. 4. The product consistency is good, the used materials are simple, the assembly is convenient, and the fluctuation of the product performance caused by inconsistent materials and manual operation can be reduced to a great extent. 5. The cost is low, the product is easy to automatically produce, the production efficiency is improved by 50% compared with the traditional method, and the labor cost can be reduced by 70%. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic diagram of a front view structure of the present utility model. In the drawing, a 1-magnetic core, a 2-coil, a 3-base, a 4-PCB and a 5-output piece are arranged. Detailed Description The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In the description of the present utility model, it should be noted that the directions or positional rel