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CN-122000174-A - Integrated transformer with dynamic magnetic flux adjusting function

CN122000174ACN 122000174 ACN122000174 ACN 122000174ACN-122000174-A

Abstract

The invention discloses an integrated transformer with a dynamic magnetic flux adjusting function, which belongs to the technical field of transformers and comprises a substrate, a packaging shell, a magnetic core assembly, a magnetic flux adjusting mechanism and a magnetic flux adjusting mechanism, wherein the packaging shell is fixedly arranged on the substrate and surrounds the substrate to form a sealing installation cavity, the magnetic core assembly is arranged in the sealing installation cavity and comprises two magnetic core bodies which are oppositely arranged along the axial direction and an elastic supporting piece, a central magnetic column is formed by the central areas of the two magnetic core bodies in a butt joint mode, a variable air gap is formed between the edge areas, the elastic supporting piece is connected with the magnetic core bodies and the substrate or the packaging shell and is used for enabling the magnetic core bodies to float along the axial direction and realize elastic reset, the planar spiral coil is fixedly arranged on the substrate and is arranged between the inner gaps of the two magnetic core bodies and surrounds the central magnetic column coaxially, and the magnetic flux adjusting mechanism surrounds the periphery of the magnetic core assembly. The transformer can realize continuous dynamic adjustment of working magnetic flux, and a plurality of groups of piezoelectric ceramic plates which are uniformly distributed in the circumferential direction lead the magnetic core body to be stressed uniformly and move stably, thereby effectively avoiding deflection and clamping stagnation of the magnetic core body.

Inventors

  • GAO CHENGPENG

Assignees

  • 庐江和润科技有限公司

Dates

Publication Date
20260508
Application Date
20260313

Claims (8)

  1. 1. An integrated transformer with dynamic flux regulating function, comprising: A substrate (1); the packaging shell (2) is fixedly arranged on the substrate (1) and is enclosed with the substrate (1) to form a sealed mounting cavity; The magnetic core assembly is arranged in the sealing installation cavity and comprises two magnetic core bodies (3) and elastic supporting pieces, wherein the two magnetic core bodies (3) are oppositely arranged along the axial direction, the central areas of the two magnetic core bodies (3) are combined to form a central magnetic column, a variable air gap is formed between the edge areas, and the elastic supporting pieces are connected with the magnetic core bodies (3) and the base plate (1) or the packaging shell (2) and are used for enabling the magnetic core bodies (3) to float along the axial direction and realize elastic reset; The planar spiral coil (4) is fixedly arranged on the base plate (1), is arranged between the internal gaps of the two magnetic core bodies (3), and is coaxially arranged around the central magnetic column; And the magnetic flux adjusting mechanism (5) is circumferentially arranged on the circumferential side of the magnetic core assembly and is used for driving the two magnetic core bodies (3) to relatively displace along the axial direction so as to adjust the size of the variable air gap and realize dynamic adjustment of magnetic flux.
  2. 2. The integrated transformer with the dynamic magnetic flux adjusting function according to claim 1, wherein a first guide ring (101) is fixedly arranged on the substrate (1), and the first guide ring (101) is sleeved on the periphery of one of the magnetic core bodies (3); The inner top surface of the packaging shell (2) is fixedly provided with a second guide ring (201), and the second guide ring (201) is sleeved on the periphery of the other magnetic core body (3).
  3. 3. An integrated transformer with dynamic magnetic flux regulating function according to claim 1, characterized in that the elastic support member is provided as an elastic support sheet (301), and the elastic support sheet (301) is provided with a plurality of elastic support sheets and is uniformly distributed along the circumferential direction of the magnetic core body (3).
  4. 4. An integrated transformer with dynamic magnetic flux regulating function according to claim 1, wherein the magnetic flux regulating mechanism (5) comprises a plurality of piezoelectric ceramic plates (501) uniformly distributed along the circumference of the magnetic core assembly and a mounting ring (502) for fixing the piezoelectric ceramic plates (501); The piezoelectric ceramic piece (501) is fixedly provided with a wedge block (503) towards the side face of the magnetic core assembly, the wedge block (503) is provided with a first inclined plane and a second inclined plane which are oppositely arranged, the first inclined plane is in sliding fit with the matching surface of one magnetic core body (3), and the second inclined plane is in sliding fit with the matching surface of the other magnetic core body (3).
  5. 5. The integrated transformer with the dynamic magnetic flux adjusting function according to claim 4, wherein a wedge groove (302) is formed in the position, corresponding to the wedge block (503), on the magnetic core body (3), and the wedge block (503) is in sliding fit with the wedge groove (302).
  6. 6. An integrated transformer with dynamic flux regulating function according to claim 4, characterized in that each of the piezoelectric ceramic plates (501) is controlled independently; all the piezoelectric ceramic plates (501) synchronously act and are used for driving the whole magnetic core bodies (3) to axially translate so as to adjust the size of the variable air gap; the piezoelectric ceramic plates (501) in different directions are used for driving the two magnetic core bodies (3) to generate angular deflection so as to correct the posture and the parallelism of the magnetic core bodies (3).
  7. 7. An integrated transformer with dynamic flux regulating function according to claim 5, characterized in that the flux regulating mechanism (5) further comprises an oil-bleeding lubrication structure; the oil seepage lubrication structure comprises an oil storage cavity (505) arranged in the wedge block (503) and a plurality of capillary micropores (504) arranged on a sliding inclined plane where the wedge block (503) is contacted with the wedge groove (302); The capillary micropore (504) is communicated with the oil storage cavity (505), and the oil storage cavity (505) is filled with insulating lubricating oil.
  8. 8. The integrated transformer with dynamic magnetic flux regulating function according to claim 7, wherein the oil-permeable lubrication structure further comprises an oil groove (303) provided on the inclined surface of the wedge-shaped groove (302); The oil grooves (303) are aligned or misplaced with the capillary micropores (504) in the sliding process so as to realize on-off control of an oil path; The oil grooves (303) are arranged at least in one group along the inclined direction of the wedge-shaped grooves (302).

Description

Integrated transformer with dynamic magnetic flux adjusting function Technical Field The invention relates to the technical field of transformers, in particular to an integrated transformer with a dynamic magnetic flux adjusting function. Background The integrated transformer is used as a core passive device in a power electronic system, and is widely applied to miniaturized power integration scenes with severe requirements on volume and weight such as portable electronic equipment, wearable equipment, power modules and the like by virtue of the characteristics of compact structure, high integration level, excellent heat dissipation performance and the like. The current mainstream integrated planar transformers still mainly adopt a fixed air gap magnetic core design, have fixed working magnetic flux characteristics, are difficult to carry out self-adaptive dynamic adjustment according to working conditions such as input voltage fluctuation, load change and the like, so that the transformer has low efficiency in a wide working condition range, the magnetic core is easy to saturate, the applicable scene is limited, the current few attempts to realize an air gap adjustable transformer scheme mainly adopt a single-side driving mode or a single-point driving mode, the magnetic core is unevenly stressed in the circumferential direction, inclination, clamping stagnation and eccentric wear are easy to occur, and the air gap adjustment precision is difficult to guarantee. Therefore, an integrated transformer with dynamic magnetic flux adjusting function is provided to solve the above problems. Disclosure of Invention The invention aims to provide an integrated transformer with a dynamic magnetic flux regulating function, which solves the problem that the existing integrated transformer is difficult to dynamically regulate magnetic flux. The invention realizes the above purpose through the following technical scheme: an integrated transformer with dynamic flux conditioning function, comprising: a substrate; The packaging shell is fixedly arranged on the substrate and is enclosed with the substrate to form a sealed mounting cavity; the magnetic core assembly is arranged in the sealing installation cavity and comprises two magnetic core bodies and an elastic supporting piece, wherein the two magnetic core bodies are oppositely arranged along the axial direction, the central areas of the two magnetic core bodies are combined to form a central magnetic column, a variable air gap is formed between the edge areas, and the elastic supporting piece is connected with the magnetic core bodies and the substrate or the packaging shell and is used for enabling the magnetic core bodies to float along the axial direction and realize elastic reset; the planar spiral coil is fixedly arranged on the substrate, is arranged between the internal gaps of the two magnetic core bodies, and is coaxially arranged around the central magnetic column; And the magnetic flux adjusting mechanism is circumferentially arranged on the circumferential side of the magnetic core assembly and is used for driving the two magnetic core bodies to relatively displace along the axial direction so as to adjust the size of the variable air gap and realize dynamic adjustment of magnetic flux. As a further optimization scheme of the invention, a first guide ring is fixedly arranged on the substrate, the first guide ring is sleeved on the periphery of one magnetic core body, a second guide ring is fixedly arranged on the inner top surface of the packaging shell, and the second guide ring is sleeved on the periphery of the other magnetic core body. As a further optimization scheme of the invention, the elastic supporting piece is provided with elastic supporting pieces, and the elastic supporting pieces are provided with a plurality of elastic supporting pieces and are uniformly distributed along the circumferential direction of the magnetic core body. As a further optimization scheme of the invention, the magnetic flux adjusting mechanism comprises a plurality of piezoelectric ceramic plates uniformly distributed along the circumferential direction of the magnetic core assembly and a mounting ring for fixing the piezoelectric ceramic plates, wherein wedge blocks are fixedly arranged on the side surfaces of the piezoelectric ceramic plates, which face the magnetic core assembly, and are provided with a first inclined surface and a second inclined surface which are oppositely arranged, the first inclined surface is in sliding fit with the matching surface of one magnetic core body, and the second inclined surface is in sliding fit with the matching surface of the other magnetic core body. As a further optimization scheme of the invention, a wedge-shaped groove is formed in the position, corresponding to the wedge block, of the magnetic core body, and the wedge block is in sliding fit with the wedge-shaped groove. As a further optimization scheme of the invention, eac