阅读说明：本技术 功率线圈及其加工方法 (Power coil and processing method thereof ) 是由 易旭 管绮珺 于 2019-01-31 设计创作，主要内容包括：本发明提供一种功率线圈,包括多个环部,多个环部彼此连接形成连续的螺旋结构,每个环部与相邻的环部之间设有切缝,所述切缝内设有粘结层,位于最内侧的所述环部的端部设有过孔。本发明还提供一种功率线圈的加工方法,包括对铜箔板进行两次切割,整体图形不会变形；并且切割图形设计自动化,为柔性生产；线圈空间利用率提高,器件效率和功率密度也随之提高了；通过拼板工艺,可方便进行批量生产,生产效率大大提高了；无需模具即可进行生产,既可以进行单件生产,也可以进行批量生产,生产与数量无关。(The invention provides a power coil, which comprises a plurality of ring parts, wherein the ring parts are connected with each other to form a continuous spiral structure, a cutting seam is arranged between each ring part and the adjacent ring part, a bonding layer is arranged in each cutting seam, and a through hole is arranged at the end part of the innermost ring part. The invention also provides a processing method of the power coil, which comprises the steps of cutting the copper foil plate twice, wherein the whole graph cannot be deformed; the cutting pattern design is automatic, and flexible production is realized; the space utilization rate of the coil is improved, and the efficiency and the power density of the device are improved; the plate splicing process can facilitate batch production, and the production efficiency is greatly improved; the production can be carried out without a die, and not only can single piece production be carried out, but also can batch production be carried out, and the production is independent of the quantity.)

1. The power coil is characterized by comprising a plurality of ring parts (1), wherein the ring parts (1) are connected with each other to form a continuous spiral structure, a cutting seam (3) is arranged between each ring part (1) and the adjacent ring part (1), a bonding layer is arranged in each cutting seam (3), and a through hole (2) is formed in the end part of the innermost ring part (1).

2. The power coil of claim 1, wherein: the bonding layers are arranged in a plurality and are sequentially arranged in the cutting seams (3) along the spiral direction.

3. The power coil of claim 1, wherein: at least one notch (11) is arranged at the position, in the magnetic force line, on the ring part (1).

4. The power coil of claim 1, wherein: the section of the spiral structure is fan-shaped, round or square.

5. The power coil of claim 4, wherein: the spiral structure is provided with a plurality of chamfers (12), the chamfers (12) are located at the intersection positions of two straight line segments on the spiral structure, or the chamfers (12) are located at the intersection positions of the straight line segments and the circular arc segments on the spiral structure.

6. The power coil of claim 1, wherein: the power coils are provided with 2 layers or 2 times of layers, and the power coils of adjacent layers are connected through the through holes (2).

7. A method for manufacturing a power coil according to any one of claims 1 to 6, comprising the steps of:

s1, taking a copper foil plate, arranging a first cutting path on the copper foil plate, cutting the copper foil plate by adopting laser to form a plurality of first seams (31), wherein the plurality of first seams (31) form a discontinuous spiral structure, so that an unformed power coil is obtained;

s2, filling resin into the first seam (31), and curing the resin to form an adhesive layer;

and S3, arranging a second cutting path on the unformed power coil, cutting the copper foil plate by adopting laser to form a plurality of second slits (32), and communicating two ends of each second slit (32) with the adjacent first slits (31) to form a cutting seam (3) so as to form the formed power coil.

8. The method for processing a power coil according to claim 7, wherein: and after the first cutting or the second cutting, checking the cutting joint of the copper foil plate, if burrs or residues exist, carrying out chemical microetching on the copper foil plate, and removing the burrs and the residues at the cutting joint.

9. The method for processing a power coil according to claim 7, wherein: when the power coil is in a fan shape, the second slit (32) is positioned on the straight line section and at the intersection position of the straight line section and the circular arc section.

10. The method for processing a power coil according to claim 7, wherein: when the power coil is square, the second slit (32) is positioned at the intersection position of the two straight line segments and on the straight line segment in the length direction.

11. The method for processing a power coil according to claim 7, wherein: when the second seam (32) is positioned at the intersection position of the two straight line segments or the intersection position of the straight line segments and the circular arc segments, the second seam (32) is cut into a shape of a straight chamfer or a circular arc chamfer.

12. The method for processing a power coil according to claim 7, wherein: and the step S4, setting a third cutting path on the power coil, wherein the third cutting path is arranged at a position in the magnetic force line, and cutting the copper foil plate by using laser to form a notch (11) on the ring part (1).