TWI635519B - Magnetic component - Google Patents

Abstract

Embodiments of the present invention provide a magnetic component including a winding base, a magnetic core set, a first winding, and a second winding. The winding base has a body, a through passage and a lead seat. The body has a primary side winding area and a secondary side winding area. The through passage runs through the body. The lead seat extends from one side of the body. A portion of the core group is disposed through the through passage. The first winding and the second winding respectively have two outlet ends. The first winding is wound around the primary side winding area, and the second winding is wound around the secondary side winding area. The two outgoing ends of the first winding and the second outgoing end of the second winding are fixed to the lead seat.

Description

Magnetic component

The present invention provides a magnetic component, and more particularly to a magnetic component having the same side of the exit end position of the primary winding and the secondary winding.

Magnetic components are essential components that are essential for the operation of electrical equipment (eg, power supplies). Generally, the magnetic component includes a transformer in an electrical device and uses a principle of electrical energy and magnetic energy conversion induction to adjust different voltages to achieve a range in which the electrical device can be applied.

If the electrical equipment wants to output a higher wattage of power, multiple magnetic elements are required to be connected in parallel and the secondary windings need to be separated windings to achieve the current density required at the output of the electrical equipment. However, due to the manufacturing process and height limitations of the magnetic components, the magnetic components will occupy a wide range of board areas. In addition, the magnetic element needs to use a partition to isolate the primary side and the secondary side to meet safety requirements (for example, the magnetic element needs to have a gauge distance between the primary side and the secondary side at a height of 5,000 meters or more), but the partition The board produces a fixed leakage inductance value. The larger the leakage inductance value, the larger the power loss; the smaller the leakage inductance value, the smaller the power loss. Therefore, in order to reduce the leakage inductance value caused by the spacer to improve the conversion efficiency of the magnetic element, the winding of the magnetic element is usually wound with a thicker wire diameter or wound and stacked in a corresponding winding area. It is also necessary to increase the solder temperature in the process to ensure solder yield, increase the bushing or increase the tape to prevent short circuit to ensure the quality of the magnetic component.

The present invention is directed to providing a magnetic component that reduces the volume of the overall magnetic component without affecting conversion efficiency. In addition, the magnetic component is not limited by the manufacturing process and height, and can simultaneously reach the current density required at the output of the electrical device.

Embodiments of the present invention provide a magnetic component including a winding base, a magnetic core set, a first winding, and a second winding. The winding base has a body, a through passage and a lead seat. The body has a primary side winding area and a secondary side winding area, the through passage extends through the body, and the lead seat extends from one side of the body. The core group portion is disposed through the through passage. And the first winding and the second winding respectively have two outlet ends. The first winding is wound around the primary side winding area, and the second winding is wound around the secondary side winding area. The two outgoing ends of the first winding and the two outgoing ends of the second winding are fixed to the lead seat. The two outgoing ends of the first winding are on the same side as the two outgoing ends of the second winding.

The embodiment of the invention further provides a magnetic component, the magnetic component comprising a winding base, a magnetic core group, a first winding and a second winding. The winding base has a body, a through passage, a first lead seat and a second lead seat. The main body has a primary side winding area and a secondary side winding area, the through hole penetrating through the body, the first pin seat extends from one side of the body, and the second lead seat is The other side of the body extends out. A portion of the core group is disposed through the through passage. And the first winding and the second winding respectively have two outlet ends. The first winding is wound around the primary side winding area, and the second winding is wound around the secondary side winding area. One of the two outlet ends of the first winding is fixed to the first lead seat and the other of the two outgoing ends of the first winding is fixed to the second lead seat, or The two outgoing ends of the first winding are fixed to the first lead seat. The two outgoing ends of the second winding are fixed to the first lead seat. The at least one outgoing end of the first winding is on the same side as the two outgoing ends of the second winding.

In order to further understand the features and technical aspects of the present invention, reference should be made to the detailed description of the invention and the accompanying drawings. The invention is not to be construed as limiting the scope of the invention.

100, 200‧‧‧ magnetic components

112, 112a, 112b, 212, 212a‧‧‧ ontology

114, 214‧‧‧through passage

116, 116a, 116b‧‧‧ lead seat

117, 117a, 117b, 217, 217a‧‧‧ feet

216, 216a‧‧‧ first lead seat

218, 218a‧‧‧ second lead seat

219, 219a‧‧‧ feet

110, 110a, 110b, 210, 210a‧‧‧ winding base

120, 220‧‧‧ magnetic core group

121, 221‧‧‧ first core

122, 222‧‧‧Second core

121a, 122a‧‧‧ Axis

121b, 122b‧‧‧ side column

130, 230‧‧‧ cover

132, 232‧‧‧ hollow

A1, A1a, C1, A2, A2a, C2, B1, B1a, B1b, B2, B2a, B2b, D1a, D2a, D1b, D2b‧‧‧ outlet

BD, BD1, BD2, BD3, BD4‧‧ ‧ partition

ML1, ML2‧‧‧ first winding

SL1, SL1a, SL2a‧‧‧ second winding

SL1b, SL2b‧‧‧ third winding

SBD1, SBD3‧‧‧ first sub-separator

SBD2, SBD4‧‧‧Second sub-separator

YN1, ZN1‧‧‧ primary side winding area

YN2, YN3, ZN2, ZN3‧‧‧ secondary winding area

1A is a schematic exploded view of a magnetic component in accordance with an embodiment of the present invention.

Fig. 1B is a schematic view showing the combination of magnetic members according to an embodiment of the present invention.

1C is a bottom plan view of a winding base according to an embodiment of the present invention.

1D is a bottom plan view of a winding base of another embodiment of the present invention.

1E is a bottom plan view of a winding base of another embodiment of the present invention.

2A is a schematic exploded view of a magnetic element according to another embodiment of the present invention.

2B is a schematic view showing the combination of magnetic elements according to another embodiment of the present invention.

2C is a bottom plan view of a winding base of another embodiment of the present invention.

2D is a bottom plan view of a winding base of another embodiment of the present invention.

2E is a bottom plan view of a winding base of another embodiment of the present invention.

2F is a bottom plan view of a winding base of another embodiment of the present invention.

2G is a bottom plan view of a winding base of another embodiment of the present invention.

In the following, the invention will be described in detail by way of illustration of various exemplary embodiments of the invention. However, the inventive concept may be embodied in many different forms and should not be construed as being limited to the illustrative embodiments set forth herein. In addition, the same reference numerals may be used in the drawings to represent similar elements.

The present invention discloses a magnetic component having at least one outgoing end of a primary winding on the same side as at least one outgoing end of the secondary winding. And if the electrical device provided with the magnetic element is to output a higher wattage of electric power, the coil on the secondary side may be laterally added to the magnetic element. In other words, compared to the conventional magnetic component, the magnetic component disclosed in the present invention is not subject to the manufacturing process and height limitation, and can achieve the current density required at the output end of the electrical device. The magnetic element disclosed in the present invention will be further described below.

First, please refer to FIGS. 1A and 1B, which show a magnetic element according to an embodiment of the present invention. Explosion diagram and combination diagram of the piece. As shown in FIG. 1A, the magnetic component 100 is disposed in an electrical device (such as a power supply), and utilizes the principle of electrical energy and magnetic energy conversion to adjust the voltage required by the electrical device to achieve a range in which the electrical device can be applied. The magnetic component 100 includes a winding base 110, a magnetic core group 120, a cover 130, a first winding ML1 and a second winding SL1. The winding base 110 has a body 112, a through passage 114 and a lead seat 116.

The through passage 114 extends through the body 112, and the body 112 can be an elongated structure. The pin holder 116 extends from one side of the body 112 and is provided with a plurality of pins 117 for electrically connecting to the circuit board (not shown), the first winding ML1 and the second winding SL1. In the present embodiment, the pin holder 116 extends from the right side of the body 112, but can also be extended from the left side of the body 112, which is not limited in the present invention.

A portion of the core group 120 is inserted through the through passage 114. Furthermore, the magnetic core group 120 of the present embodiment is of the EE type, and includes a first core portion 121 and a second core portion 122. The first core portion 121 has a shaft center portion 121a and two side pillars 121b, and the second core portion 122 has a shaft center portion 122a and both side pillars 122b. The axial portions 121a and 122a of the first core portion 121 and the second core portion 122 are disposed in the through passage 114 of the body 112, and the two pillars 121b and 122b are respectively disposed on the body 112 of the winding base 110. On both sides. The core group 120 of the present embodiment may also be a core group such as a UI type, a UU type, an EI type, an EER type, an EFD type, and an EED type, which is not limited in the present invention. The cover 130 is assembled with the winding base 110 and has a hollow portion 132. The hollow portion 132 accommodates the winding base 110 and the core portions 121a and 22a of the core group 120 to prevent the magnetic energy conversion between the winding base 110 and the core group accommodated in the hollow portion 132 from being externally received. interference. The magnetic component 100 can also determine whether or not the cover 130 is provided according to actual conditions, which is not limited in the present invention.

The body 112 has a plurality of winding regions, and the first winding ML1 and the second winding SL1 are respectively disposed in the plurality of winding regions. The condition in which the first winding ML1 and the second winding SL1 are wound around a plurality of winding regions of the body 112 will be further described below.

Please also refer to FIG. 1C, which shows a bottom view of the winding base of an embodiment of the present invention. As shown in FIG. 1C, the body 112 has a primary side winding area YN1 and a secondary side winding area YN2, and the outer diameter of the primary side winding area YN1 is equal to the outer diameter of the secondary side winding area YN2. The first winding ML1 is wound around the primary side winding area YN1 farther away from the pin holder 116 and has two outlet ends A1 and A2. The second winding SL1 is wound around the secondary side winding area YN2 closer to the lead frame 116 and has two outgoing ends B1 and B2. It is to be noted that the two outlet ends A1 and A2 of the first winding ML1 and the two outgoing ends B1 and B2 of the second winding SL1 are respectively fixed to one of the plurality of pins 117 of the pin holder 116. . Furthermore, the two outlet ends A1 and A2 of the first winding ML1 are fixed to the pins 117 on the outer side of the pin holder 116, and the second outlet ends B1 and B2 of the second winding SL1 are fixed to the lead. The pins 117 on the inner side of the foot 116 are such that the outlet ends A1 and A2 of the first winding ML1 and the outlet ends B1 and B2 of the second winding SL1 are on the same side. Further, the secondary side winding area YN2 extends to a region AR on the pin holder 116. This area AR is defined as a plurality of extension lines LE1, LE2 surrounded by the outer boundary of the secondary side winding area YN2 of the winding base 110. The two outlet ends A1 and A2 of the first winding ML1 are fixed to the two pins 117 outside the region AR on the lead frame 116. The two outlet ends B1 and B2 of the second winding SL1 are fixed to the two pins 117 on the inner side of the region AR on the lead frame 116. Accordingly, the cover 130 will cover the winding base 110, a portion of the core group 120, a portion of the first winding ML1 and a portion of the second winding SL1, to assemble the magnetic component 100 of the cost, as shown in the figure. 1B is shown. In the present embodiment, the primary side winding area YN1 represents the primary winding area of the magnetic element 100, and the secondary side winding area YN2 represents the secondary winding area of the magnetic element 100. The primary side winding area YN1 can be disposed at a position closer to the pin holder 116, and the position of the secondary side winding area YN2 can be disposed at a position farther away from the pin holder 116, which is not limited in the present invention.

In other embodiments, the magnetic element 100 may further include a third winding, and the first winding, the second winding, and the third winding may be alternately disposed in the corresponding winding area. As shown in FIG. 1D, the body 112a of the winding base 110a has a primary side winding. Zone YN1 and two secondary side winding zones YN2, YN3. The order between the winding areas is sequentially set by the pin holder 116a as the secondary side winding area YN2, the primary side winding area YN1 and the secondary side winding area YN3 (ie, the secondary side winding area YN3 is set once) One side of the side winding area YN1). The first winding ML1, the second winding SL1a and the third winding SL1b are respectively wound around the primary side winding area YN1, the secondary side winding areas YN2 and YN3, so that the winding order on the body 112a is made by the pins. The seat 116a is sequentially the second winding SL1a, the first winding ML1, and the third winding SL1b. The first winding ML1 has two outgoing ends A1a and A2a, the second winding SL1a has two outgoing ends B1a and B2a, and the third winding SL1b has two outgoing ends B1b and B2b. It should be noted that the outlet ends A1a and A2a of the first winding ML1, the outlet ends B1a and B2a of the second winding SL1a, and the outlet ends B1b and B2b of the third winding SL1b are respectively fixed. One of the plurality of pins 117a of the foot 116a is such that the outlet ends A1a and A2a of the first winding ML1 and the outlet ends B1a, B2a, B1b and B2b of the second windings SL1a and SL1b are on the same side.

The order between the winding regions on the body can also be arbitrarily changed. For example, the order between the winding regions is sequentially the primary side winding area YN1 and the secondary side winding area YN2 and YN3 (ie, the order of the winding areas). The secondary side winding area YN3 is disposed on one side of the secondary side winding area YN2), which is not limited in the present invention. In addition, the winding area corresponding to the winding of the third winding SL1b may also be changed to the primary winding area (not shown in the drawing), so that the body 112a of the winding base 110a has two primary winding areas and one Secondary side winding area. Similarly, the order between the winding regions on the body can be arbitrarily changed, and the present invention does not limit this.

With the first winding as the primary winding and the second winding as the secondary winding, if the electrical device wants to output a higher wattage of power, the bodies 112 and 112a can laterally increase the secondary winding area, and A second winding is wound on the increased secondary winding area (ie, the coil on the secondary side is laterally increased) to increase the amount of magnetic energy to be converted, thereby achieving the current density required at the output of the electrical device.

In addition, referring to FIGS. 1A, 1C and 1D, the body further has at least one partition, It is placed at the junction of any two adjacent winding areas to isolate the windings as the primary side and the secondary side and meet the safety requirements. As shown in FIG. 1C, a partition BD is disposed at a boundary between the primary side winding area YN1 and the secondary side winding area YN2 of the body 112 to isolate the first winding ML1 (primary side) from the second winding SL1 ( Secondary side). As shown in FIG. 1D, a partition BD1 is respectively disposed at a boundary between the primary side winding area YN1 of the main body 112a and the secondary side winding area YN2 and YN3 to isolate the second winding SL1a (secondary side), first Winding ML1 (primary side) and third winding SL1b (secondary side).

Referring again to FIG. 1E, a bottom view of a winding base of another embodiment of the present invention is shown. In the winding base 110b of FIG. 1E, the partition BD2 of the body 112b is different from the partition BD of FIGS. 1A-1B and the partition BD1 of FIG. 1C. The difference is that the partition BD2 has a first sub-spacer SBD1 and a second sub-spacer SBD2. The first sub-spacer SBD1 is higher than the second sub-spacer SBD2 and is arranged together with each other to form a stepped structure, that is, there is a high and low drop between the first sub-separator SBD1 and the second sub-separator SBD2. . The structure and the connection relationship between the pin holder 116b of the winding base 110b, the plurality of pins 117b, the first winding ML1 and the second winding SL1 are substantially the same as the winding base 110 shown in FIG. 1C. The structure and the connection relationship between the pin holder 116 and the plurality of pins 117, the first winding ML1 and the second winding SL1 are the same, and therefore will not be described herein.

As can be seen from the above, a stepped structure is formed between the first sub-separator SBD1 and the second sub-separator SBD2 such that the first winding ML1 (primary side) and the second winding SL1 (secondary side) The Creepage Distance is increased, so the winding base 110b can have a higher specification of safety requirements at the same partition BD2 thickness. If an electrical device wants to output a higher wattage of power, it must reduce power loss in the same area. At this time, if the electrical equipment needs to operate at an altitude of 5,000 meters or more and the safety distance is required, the distance between the partitions must be opened to achieve the required distance for safety. The above method will increase the leakage inductance value and increase the power loss of the transformer, and the required board area is increased. Therefore, in the structure in which the first sub-separator SBD1 and the second sub-separator SBD2 of the present embodiment have a high and low drop difference, if the winding base is When the thickness of the partition BD2 of 110b is reduced, the winding base 110b can still achieve higher safety requirements for use in high-power electrical equipment disposed at an altitude of 5,000 meters or more.

Next, please refer to FIGS. 2A and 2B, which show exploded and combined views of a magnetic element according to another embodiment of the present invention. As shown in FIG. 2A, the magnetic component 200 is disposed in an electrical device (such as a power supply), and utilizes the principle of electrical energy and magnetic energy conversion to adjust the voltage required by the electrical device to achieve a range in which the electrical device can be applied. The magnetic component 200 includes a winding base 210, a magnetic core group 220, a cover 230, a first winding ML2, a second winding SL2a and a third winding SL2b. The winding base 210 has a body 212, a through passage 214, a first lead seat 216 and a second lead seat 218. The core group 220 has a first core portion 221 and a second core portion 222. The cover 230 has a hollow portion 232.

The magnetic component 200 of the present embodiment is different from the magnetic component 100 of the previous embodiment in that the first pin holder 216 of the embodiment extends from the right side of the body 212, and the second pin holder 218 is disposed on the left side of the body 212. extend. The body 212 has a plurality of winding regions, and the first winding ML2, the second winding SL2a, and the third winding SL2b are respectively disposed in the plurality of winding regions. The state in which the first winding ML2, the second winding SL2a, and the third winding SL2b are wound around the plurality of winding regions of the body 212 will be further described below.

Please also refer to FIG. 2C, which shows a bottom view of a winding base of another embodiment of the present invention. As shown in the winding base 210 of FIG. 2C, the body 212 has a primary side winding area ZN1, two secondary side winding areas ZN2 and ZN3, and the second winding SL2a is wound closer to the first lead seat. The secondary side winding zone ZN2 of 216 has two outlet ends D1a and D2a. The third winding SL2b is wound around the secondary side winding area ZN3 closer to the second lead seat 218 and has two outgoing ends D1b and D2b. The first winding ML2 is wound around the primary side winding area ZN1 between the second winding SL2a and the third winding SL2b and has two outlet ends C1 and C2.

It is worth noting that the outlet end C2 of the first winding ML2 and the second winding SL2a The two outlet ends D1a and D2a are respectively fixed to one of the plurality of pins 217 of the first pin holder 216. Furthermore, the outlet end C2 of the first winding ML2 is fixed to the pin 217 on the outer side of the first pin holder 216, and the two outlet ends D1a and D2a of the second winding SL2a are fixed to the first The pin 217 on the inner side of the pin holder 216 is such that the outgoing end C2 of the first winding ML2 and the outgoing end D1a and D2a of the second winding SL2a are on the same side. And the outlet ends C1 and D2b of the first winding ML2 and the second windings SL2b are respectively fixed to one of the plurality of pins 219 of the second lead seat 218. Furthermore, the outlet end C1 of the first winding ML2 is fixed to the pin 219 on the outer side of the second lead seat 218, and the two outgoing ends D1b and D2b of the third winding SL2b are fixed to the second. The pin 219 on the inner side of the pin holder 218 is such that the outlet end C1 of the first winding ML2 and the outlet ends D1b and D2b of the third winding SL2b are on the same side. The outer diameter of the primary side winding zone ZN1 is equal to the outer diameter of the secondary side winding zones ZN2 and ZN3. Furthermore, the secondary side winding zone ZN2 extends to a first area AR1 on the first leadframe 216 and to a second area AR2 on the second leadframe 218. The first area AR1 is defined as a plurality of extension lines LE1 and LE2 surrounded by the outer boundary of the secondary side winding area ZN2 of the winding base 210. The second area AR2 is defined as a plurality of extension lines LE1 and LE2 surrounded by the outer boundary of the secondary side winding area ZN3 of the winding base 210. One of the outlet ends C2 of the first winding ML2 is fixed to the pin 217 outside the first region AR1 of the first pin holder 216. The other outgoing end C1 of the first winding ML2 is fixed to the pin 219 outside the second area AR1 of the second lead seat 218. The two outlet ends D1a and D2a of the second winding SL2a are fixed to the two pins 217 in the first region AR1 of the first lead frame 216. The two outlet ends D1b and D2b of the second winding SL2b are fixed to the two pins 219 in the second region AR2 of the second lead frame 218. Accordingly, the cover 230 will cover the winding base 210, a portion of the core group 220, a portion of the first winding ML2, a portion of the second winding SL2a, and a portion of the third winding SL2b, so as to be assembled. The magnetic component 200 of the case is shown in Figure 2B.

In other embodiments, the two outlet ends C1 and C2 of the first winding ML2 can also be solid. One of the multiple pins of the same pin holder. Referring to FIG. 2D at the same time, the outlet end C1 of the first winding ML2 is changed to one of the plurality of pins 217 of the first leadframe 216. Furthermore, the two outgoing ends C1 and C2 of the first winding ML2 are fixed to the pins 217 on the outer side of the first lead seat 216, and the two outgoing ends D1a and D2a of the second winding SL2a are fixed. The pins 217 on the inner side of the first lead frame 216 are such that the two outgoing ends C1 and C2 of the first winding ML2 and the outgoing ends D1a and D2a of the second winding SL2a are on the same side. The two outgoing ends D1b and D2b of the third winding SL2b are respectively fixed to one of the plurality of pins 219 of the second lead frame 218. Furthermore, the two outgoing ends D1b and D2b of the third winding SL2b are fixed to the pins 219 on the inner side of the second lead frame 218, so that the outgoing ends D1b and D2b of the third winding SL2b and the first The outlet ends C1 and C2 of the winding ML2 are on different sides. The outer diameter of the primary side winding zone ZN1 is equal to the outer diameter of the secondary side winding zones ZN2, ZN3. Furthermore, the two outgoing ends C1 and C2 of the first winding ML2 are fixed to the pins 217 outside the first region AR1 of the first leadframe 216. The two outlet ends D1a and D2a of the second winding SL2a are fixed to the two pins 217 in the first region AR1 of the first lead frame 216. The two outlet ends D1b and D2b of the second winding SL2b are fixed to the two pins 219 in the second region AR2 of the second lead frame 218.

In another embodiment, the body 212 of the winding base 210 may also omit the third winding SL2b and retain the first winding ML2 and the second winding SL2a. As shown in FIG. 2E, the outlet end C2 of the first winding ML2 and the two outgoing ends D1a and D2a of the second winding SL2a are respectively fixed to one of the plurality of pins 217 of the first pin holder 216. . Furthermore, the outlet end C2 of the first winding ML2 is fixed to the pin 217 on the outer side of the first pin holder 216, and the two outlet ends D1a and D2a of the second winding SL2a are fixed to the first The pin 217 on the inner side of the pin holder 216 is such that the outgoing end C2 of the first winding ML2 and the outgoing end D1a and D2a of the second winding SL2a are on the same side. And the outlet end C1 of the first winding ML2 is fixed to one of the plurality of pins 219 of the second lead frame 218. Furthermore, the outlet end C1 of the first winding ML2 is fixed to the pin 219 on the outer side of the second pin holder 218, so that the outlet end of the first winding ML2 C1 is different from the outgoing end C2 of the first winding ML2 and the outgoing ends D1a and D2a of the second winding. The outer diameter of the primary side winding zone ZN1 is equal to the outer diameter of the secondary side winding zone ZN2. Furthermore, one of the outlet ends C2 of the first winding ML2 is fixed to the pin 217 outside the first region AR1 of the first pin holder 216. The other outgoing end C1 of the first winding ML2 is fixed to the pin 219 outside the second area AR1 of the second lead seat 218. The two outlet ends D1a and D2a of the second winding SL2a are fixed to the two pins 217 in the first region AR1 of the first lead frame 216.

Of course, the two outgoing ends C1 and C2 of the first winding ML2 may also be fixed to one of the plurality of pins of the same pin seat as the two outgoing ends D1a and D2a of the second winding SL2a. As shown in FIG. 2F, the outlet end C1 of the first winding ML2 is changed to one of the plurality of pins 217 of the first leadframe 216. Furthermore, the two outgoing ends C1 and C2 of the first winding ML2 are fixed to the pins 217 on the outer side of the first lead seat 216, and the two outgoing ends D1a and D2a of the second winding SL2a are fixed. The pins 217 on the inner side of the first lead frame 216 are such that the two outgoing ends C1 and C2 of the first winding ML2 and the outgoing ends D1a and D2a of the second winding SL2a are on the same side. The plurality of pins 219 of the second pin holder 218 are not wound around the outlet ends of the first winding and the second winding. The outer diameter of the primary side winding zone ZN1 is equal to the outer diameter of the secondary side winding zone ZN2. Furthermore, the two outgoing ends C1 and C2 of the first winding ML2 are fixed to the pins 217 outside the first region AR1 of the first leadframe 216. The two outlet ends D1a and D2a of the second winding SL2a are fixed to the two pins 217 in the first region AR1 of the first lead frame 216.

The order between the winding regions on the body 212 can also be arbitrarily changed. For example, the order between the winding regions is sequentially from the first pin holder 216 to the second pin holder 218 as the primary side winding region ZN1, II. The secondary winding areas ZN2 and ZN3 (i.e., the secondary winding area ZN3 are disposed on one side of the secondary winding area ZN2), which is not limited in the present invention. In addition, the winding area corresponding to the winding of the third winding SL2b may also be changed to the primary winding area (not shown in the drawing), so that the body 212 of the winding base 210 has two primary winding areas and one Secondary side winding area. Similarly, the order between the winding areas on the body is also The invention can be arbitrarily changed, and the present invention does not limit this.

With the first winding as the primary winding and the second winding and the third winding as the secondary winding, if the electrical device wants to output a higher wattage of power, the body 212 can laterally increase the secondary winding. Zone, and winding a secondary winding on the increased secondary winding area (ie, increasing the coil on the secondary side laterally) to increase the amount of magnetic energy to be converted, thereby achieving the current density required at the output of the electrical device. .

In addition, as shown in FIG. 2A, 2C-2F, the body 212 further has at least one partition BD3 disposed at the boundary of any two adjacent winding regions to isolate the windings as the primary side and the secondary side and satisfy Safety requirements. 2C, a partition BD3 is disposed at a boundary between the primary side winding area ZN1 and the secondary side winding area ZN2 and ZN3 of the body 212 to isolate the first winding ML2 (primary side) and the second winding. (secondary side) SL2a and third winding SL2b (secondary side).

Referring again to FIG. 2G, a bottom view of a winding base of another embodiment of the present invention is shown. In the winding base 210a of Fig. 2G, the partition BD4 of the body 211A is different from the partition BD3 of Figs. 2A, 2C-2F. The difference is that the partition BD4 has a first sub-spacer SBD3 and a second sub-spacer SBD4. The first sub-spacer SBD3 is higher than the second sub-spacer SBD4 and is arranged together with each other to form a stepped structure, that is, there is a high and low drop between the first sub-spacer SBD3 and the second sub-spacer SBD4. . The first pin holder 216a and the second pin holder 218a, the plurality of pins 217a and 219a, the first winding ML2, the second winding SL2a and the third winding SL2b are related to the winding base 210a. The structure and the connection relationship are substantially the same as the first pin holder 216 and the second pin holder 218 of the winding base 210 shown in FIG. 2C, the plurality of pins 217 and 219, the first winding ML2, and the second winding. The structure and the connection relationship between the SL2a and the third winding SL2b are the same, and therefore will not be described herein.

Therefore, a stepped structure is formed between the first sub-spacer SBD3 and the second sub-spacer SBD4 such that the first winding ML2, the second winding SL2a, and the third winding SL2b (ie, the primary winding and the secondary The Creepage Distance between the windings increases, so the winding base 210a can be in the same partition BD4 A higher specification of safety requirements at thickness. Electrical equipment wants to output a higher wattage of electricity, which must reduce power loss in the same area. At this time, if the electrical equipment needs to operate at an altitude of 5,000 meters or more and the safety distance is required, the distance between the partitions must be opened to achieve the required distance for safety. The above method will increase the leakage inductance value and increase the power loss of the transformer, resulting in an increase in the required board area. Therefore, in the structure having a high and low drop difference between the first sub-spacer SBD3 and the second sub-spacer SBD4 of the present embodiment, if the thickness of the spacer BD2 of the winding base 210a is reduced, the winding base 210a can still Achieve high safety requirements for high-power electrical equipment set at altitudes above 5,000 meters.

In summary, the magnetic component provided by the embodiment of the present invention transmits the position of the outlet end of the primary winding and the secondary winding, so that at least one of the outlet ends of the primary winding and at least one of the secondary windings The outlet end is on the same side. Thereby, the magnetic element can reduce the volume of the integral magnetic element without affecting the conversion efficiency. In addition, if the electrical device is to output a higher wattage of power, the magnetic component of the present invention can laterally increase the coil on the secondary side to increase the amount of magnetic energy to be converted, so that the magnetic component is not limited by the production process and height, and At the same time, the current density required at the output of the electrical device is reached.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the invention.

Claims (12)

A magnetic component includes: a winding base having a body, a through passage, a first lead seat and a second lead seat, the body having a primary side winding area and a secondary side winding a line region and another secondary side winding region, the through channel extending through the body, the secondary side winding region extending to one side of the primary side winding region, and the other secondary side winding region extending to The other side of the primary winding area; a core group, an axial portion of the magnetic core group is disposed in the through passage, and the two side pillars of the magnetic core group are respectively disposed on two sides of the body; The first winding and the second winding respectively have two outlet ends, the first winding is wound around the primary winding area, and the second winding is wound around the secondary winding area. Wherein the secondary side winding area extends to a first area on the first leadframe, and the other secondary side winding area extends to a second area on the second leadframe, the first The area is defined as a plurality of extension lines surrounded by the outer boundary of the secondary side winding area, and the second area is defined by the outer boundary of the other secondary side winding area a plurality of extension lines; wherein one of the two outlet ends of the first winding is fixed to the first lead seat and the other of the two outgoing ends of the first winding is fixed The second pin holder; wherein the two outlet ends of the second winding are fixed to the first pin holder; wherein the first pin holder and the second pin holder respectively have a plurality of One of the two outgoing ends of the first winding is fixed to the pin outside the first region of the first lead frame, and the two outgoing ends of the first winding are The other pin is fixed to the second portion of the second lead pad, and the two outgoing ends of the second wire are fixed in the first region of the first pin holder. The pins; wherein an outer diameter of the primary side winding area is equal to an outer diameter of the secondary side winding area. The magnetic component of claim 1, further comprising a third winding, and the body further comprises another primary winding region, the third winding being wound around the other primary winding a line region having a second outlet end, wherein the two outlet ends of the third winding are fixed to the second lead seat, and the other primary side winding area is disposed in the primary side winding area or One side of the secondary side winding area. The magnetic component of claim 1, further comprising a third winding, and the body further comprises another secondary winding area, the third winding being wound around the other secondary winding a second outlet end, wherein the second outlet end of the third winding is fixed to the second lead seat, and the other secondary winding area is disposed in the primary winding area or One side of the secondary side winding area. The magnetic component of claim 2, wherein the body further has a plurality of partitions disposed between the primary side winding area, the secondary side winding area and the other primary side winding area. The magnetic component of claim 3, wherein the body further has a plurality of partitions disposed between the primary side winding area, the secondary side winding area and the other secondary side winding area. The magnetic component of claim 4 or 5, wherein the spacers have a first sub-separator and a second sub-separator, the first sub-separator being higher than the second sub-spacer and grouped with each other Set together to form a stepped structure. A magnetic component includes: a winding base having a body, a through passage and a lead seat, the body having a primary side winding area and a secondary side winding area, the through passage penetrating the body And the pin holder extends from only one side of the body; a magnetic core group, an axial portion of the magnetic core group is disposed through the through passage; and a first winding and a second winding , having two outlet ends, respectively, the first winding Provided in the primary side winding area, and the second winding is wound around the secondary side winding area, wherein the secondary side winding area extends to an area on the lead seat, the area is defined as a plurality of extension lines surrounded by the outer boundary of the second side winding region; wherein the two outlet ends of the first winding and the two outgoing ends of the second winding are fixed to the pin The pin holder has a plurality of pins, and the two outlet ends of the first winding are fixed to the two pins on the outer side of the region on the pin holder, and the second winding is The two outlet ends are fixed to the two pins on the inner side of the area on the lead seat; wherein the outer diameter of the primary side winding area is equal to the outer diameter of the secondary side winding area. The magnetic component of claim 7, wherein the primary side winding area is disposed on one side of the secondary side winding area. The magnetic component of claim 7, further comprising a third winding, and the body further comprises another primary winding area, the third winding being wound around the other primary winding area, And having two outlet ends, wherein the two outlet ends of the third winding are fixed to the lead seat, and the other primary side winding area is disposed on the primary side winding area or the secondary side winding One side of the line area. The magnetic component of claim 7, further comprising a third winding, and the body further comprises another secondary winding area, the third winding being wound around the other secondary winding a second outlet end, wherein the two outlet ends of the third winding are fixed to the lead seat, and the other secondary winding area is disposed on the primary winding area or the second One side of the secondary winding area. The magnetic component of claim 7, wherein the body further has at least one partition disposed at a boundary between the primary side winding area and the secondary side winding area. The magnetic component of claim 11, wherein the spacer has a first sub-spacer and a second sub-spacer, the first sub-separator being higher than the second sub-spacer and grouped with each other To form a stepped structure.