Stack of magnetic sheets, method for producing a stack of magnetic sheets, and electric machine

文档序号:395780 发布日期:2021-12-14 浏览:27次 中文

阅读说明:本技术 磁片堆栈、用于制造磁片堆栈的方法和电机 (Stack of magnetic sheets, method for producing a stack of magnetic sheets, and electric machine ) 是由 J.布施贝克 G.里格 C.舒 T.索勒 R.沃尔默 于 2020-04-16 设计创作,主要内容包括:本发明涉及一种磁片堆栈,磁片堆栈具有多个磁片(20),所述磁片彼此电绝缘,其方法是,磁片彼此主要以非零化的净尺寸彼此间隔开。(The invention relates to a stack of magnetic disks having a plurality of magnetic disks (20) which are electrically insulated from one another in that the magnetic disks are spaced apart from one another predominantly by a non-zero clear dimension.)

1. A stack of magnetic sheets having a plurality of magnetic sheets (20) electrically insulated from each other by being spaced from each other primarily by a non-zero net size.

2. A stack of magnetic sheets according to any of the preceding claims, wherein the magnetic sheets (20) are spaced apart from each other by means of one or more distance holders (30) located therebetween.

3. A stack of magnetic sheets according to any of the preceding claims, wherein the one or more distance holders (30) are formed from ceramic.

4. A stack of magnetic sheets according to any of the preceding claims, wherein the one or more distance holders (30) are formed from aluminium oxide and/or zirconium oxide and/or magnesium oxide and/or yttrium oxide and/or boron nitride and/or yttrium aluminium garnet and/or silicon nitride and/or silicon dioxide.

5. A stack of magnetic sheets according to any of the preceding claims, wherein the one or more distance holders (30) are formed by particles of an electrically insulating material.

6. The stack of magnetic sheets according to claim 5, wherein the particles have a diameter of at most 300 microns, in particular at most 100 microns, and preferably at most 50 microns.

7. A stack of magnetic flakes according to claim 5 or 6, wherein the particles have a monomodal or at least approximately Gaussian distribution of diameters with a mean value of at least 0.5 micrometer and/or at most 20 micrometers, preferably at least 1 micrometer and/or at most 6 micrometers, particularly preferably at least 2 micrometers and/or at most 4 micrometers.

8. A stack of magnetic sheets according to any one of the preceding claims, wherein one or more particles are formed from ceramic particles.

9. A stack of magnetic sheets according to any one of the preceding claims, wherein one or more of the particles are substantially spherically configured.

10. A method for manufacturing a stack of magnetic flakes according to any of the preceding claims, wherein magnetic flakes (20) are provided, a suspension with ceramic particles is provided and the suspension is deposited on one or more magnetic flakes (20), and then the magnetic flakes (20) are stacked.

11. A method according to claim 10, wherein the deposition is performed by spraying and/or printing a suspension and/or dipping one or more magnetic flakes (20) into the suspension.

12. Method according to any one of the preceding claims, wherein the magnetic sheets (20) are mutually pressed or packed during or after their stacking.

13. An electric machine having a stack of magnetic sheets (10) according to any one of claims 1 to 9 and/or manufactured according to the method of any one of claims 10 to 12.

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