Method for manufacturing MSO coil and device for manufacturing same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01F-007/06
H02K-015/04
H01F-027/28
H02K-015/00
출원번호
16466530
(2017-12-01)
등록번호
11404944
(2022-08-02)
우선권정보
KR-10-2016-0164319 (2016-12-05)
국제출원번호
PCT/KR2017/014003
(2017-12-01)
국제공개번호
WO2018/105958
(2018-06-14)
발명자
/ 주소
Lee, Eui Chun
Kwon, Soon O
Lee, Ho Young
Lee, Su Woong
Lee, Kang Won
출원인 / 주소
KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
대리인 / 주소
Cantor Colburn LLP
인용정보
피인용 횟수 :
0인용 특허 :
0
초록▼
Disclosed is a method for manufacturing an MSO coil, comprising: a pressing step of forming a bent surface on a part of a unit coil layer, which has a ring shape such that both ends thereof face each other, thereby endowing both ends of the unit coil layer with a height difference; a fixing step of
Disclosed is a method for manufacturing an MSO coil, comprising: a pressing step of forming a bent surface on a part of a unit coil layer, which has a ring shape such that both ends thereof face each other, thereby endowing both ends of the unit coil layer with a height difference; a fixing step of connecting and fixing a plurality of unit coil layers to each other, each unit coil layer having the bent surface formed thereon, such that the first end of both ends of a unit coil layer having the bent surface formed thereon contacts the second end of both ends of another unit coil layer having the bent surface formed thereon; and a bonding step of bonding connection parts defined by contact of the first and second ends of each of the plurality of unit coil layers that are connected and fixed to each other.
대표청구항▼
1. A method for manufacturing a Maximum Slot Occupy (MSO) coil, comprising: a pressing step of forming a bent surface on a part of a unit coil layer, which has a ring shape such that both ends thereof face each other, thereby endowing both ends of the unit coil layer with a height difference;a fixin
1. A method for manufacturing a Maximum Slot Occupy (MSO) coil, comprising: a pressing step of forming a bent surface on a part of a unit coil layer, which has a ring shape such that both ends thereof face each other, thereby endowing both ends of the unit coil layer with a height difference;a fixing step of connecting and fixing a plurality of unit coil layers to each other, each unit coil layer having a bent surface formed thereon, such that one end of both ends of a unit coil layer having the bent surface formed thereon contacts the other end of both ends of another unit coil layer having the bent surface formed thereon;a bonding step of bonding connection parts where one end and the other end of each of the plurality of unit coil layers that are connected and fixed to each other are in contact, anda coupling structure forming step wherein when any one unit coil layer of the plurality of unit coil layers, on which the bent surface is formed, is referred to as a first coil layer, and another unit coil layer having the other end connected with one end of the first coil layer is referred to as a second coil layer, the coupling structure is configured by including grooves and protrusions which are male/female-coupled, which are provided on one end of the first coil layer and the other end of the second coil layer, respectively so that the connection parts where one end of the first coil layer and the other end of the second coil layer are in contact are fitted and coupled to each other,wherein in the bonding step, connection parts of the plurality of unit coil layers connected to each other through the coupling structure are bonded by making the grooves and the protrusions of the coupling structure into a half-molten state by using a resistance heat generated when flowing an electric current to the connection parts and integrally pressing the connection parts of the plurality of unit coil layers including the first coil layer and the second coil layer. 2. The method for manufacturing an MSO coil according to claim 1, the coupling structure forming step comprises: forming a first groove in which a vertical cross section of the remaining part along a longitudinal direction at one end of the first coil layer other than the one part is recessed so as to form a first protrusion where one part at the one end of the first coil layer protrudes; andforming a second groove in which a vertical cross section of the remaining part along a longitudinal direction at the other end of the second coil layer other than the one part is recessed so as to form a second protrusion where one part at the other end of the second coil layer protrudes,wherein the coupling structure is provided such that the first protrusion at one end of the first coil layer is fitted into the second groove at the other end of the second coil layer, and the second protrusion at the other end of the second coil layer is fitted into the first groove at one end of the first coil layer, which are corresponding with each other. 3. The method for manufacturing an MSO coil according to claim 1, wherein in the coupling structure forming step when another unit coil layer having the other end connected with one end of the second coil layer is referred to as a third coil layer, a coupling structure formed at one end of the second coil layer and the other end of the third coil layer, respectively, is formed to be disposed at a position deviated from the same line as a coupling structure formed at one end of the first coil layer and the other end of the second coil layer, respectively. 4. The method for manufacturing an MSO coil according to claim 1, wherein in the bonding step, the coupling structures of the first coil layer and the second coil layer are bonded to each other by facing and pressing an electrode to the connection part at which one end of the first coil layer and the other end of the second coil layer are female and male coupled through the coupling structure, and flowing the electric current to the connection part. 5. The method for manufacturing an MSO coil according to claim 1, wherein in the bonding step, the electrode presses a width direction of connection parts of the first coil layer and the second coil layer, and presses a thickness direction of the connection parts by applying an external force when flowing the electric current to the connection parts through the electrode. 6. The method for manufacturing an MSO coil according to claim 5, wherein in the bonding step, an applying direction of the external force for pressing the connection parts is coincident with the insertion direction of the groove and the protrusion having the coupling structure, and the protrusion inserted into the groove by the external force applied to the connection parts is preferentially melted locally and bonded. 7. A device for manufacturing a Maximum Slot Occupy (MSO) coil comprising: a press jig having a surface on which the unit coil layer is placed, a part of the surface being recessed to have a preset inclination to correspond to a part of the unit coil layer, on which the bent surface is to be formed, such that, when pressure is applied to the unit coil layer by external force, a bent surface is formed on the part of the unit coil layer;a fixing jig inserted between the plurality of unit coil layers, respectively, so as to support the plurality of unit coil layers such that the plurality of unit coil layers, each unit coil layer having the bent surface formed thereon, can be connected to each other at an interval corresponding to the inclination of the bent surface; anda welding machine for welding connection parts where one end and the other end of each of the plurality of unit coil layers are connected and fixed to each other by the fixing jig,whereinthe press jig comprises a first press jig on which a part including one end of both ends of the unit coil layer is laid and fixed and a second press jig on which another part including the other end of both ends of the unit coil layer is laid and fixed,wherein the second press jig comprises: a slope line provided as a groove having an inclination and forming a bent surface at a predetermined angle at another part including the other end of both ends of the unit coil layer when a pressure is applied to the unit coil layer by an external force; and a plane line of bending the other end of the unit coil layer from the bent surface once more when a pressure is applied to the unit coil layer by an external force so that the other end of the unit coil layer has a height difference from, but is parallel to the one end of the unit coil layer. 8. The device for manufacturing the MSO coil according to claim 7, wherein the fixing jig comprises: a fixing pin that is provided as a pair and is inserted into the annular unit coil layer in a spaced relationship to fix the unit coil layer;a plurality of spacers inserted between the plurality of unit coil layers, respectively, each of the plurality of spacers having a thickness equal to the height difference between both ends of the unit coil layer by the bent surfaces;a first fixing jig to which one side of the plurality of spacers is inserted and fixed; anda second fixing jig to which the other side of the plurality of spacers is inserted and fixed. 9. The device for manufacturing the MSO coil according to claim 8, wherein the first fixing jig comprises: a face piece for touching and fixing the bent surface of the uppermost unit coil layer of the plurality of unit coil layers; andan end groove which is opened along one side of the face piece, into which an extending portion formed by extending one end or the other end of the unit coil layer located at the uppermost unit coil layer of the plurality of unit coil layers in a straight line shape, is inserted and fixed. 10. A Maximum Slot Occupy (MSO) coil manufactured by a method for manufacturing an MSO coil according to claim 1, wherein the MSO coil forms a coil block in which the plurality of unit coil layers are continuously stacked along a vertical direction, and the coil block is configured such that a width of a vertical cross section of the unit coil layer increases and a thickness thereof decreases as going from the lower part to the upper part, and thus all the vertical cross-sectional areas along the vertical direction of the plurality of unit coil layers are formed identically. 11. A Maximum Slot Occupy (MSO) coil comprising: a coil block in which a plurality of unit coil layers are continuously stacked along a vertical direction,wherein the coil block is configured such that a width of a vertical cross section of the unit coil layer increases and a thickness thereof decreases as going from the lowest unit coil layer to the highest unit coil layer, and thus all the vertical cross-sectional areas along the vertical direction of the plurality of unit coil layers are formed identically.
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