Winding structure, Ethernet transformer, circuit board and Ethernet communication equipment
By designing a matching structure of thick and thin windings in an Ethernet transformer, the problem that existing Ethernet transformers are difficult to achieve high current PoE function at high transmission rates is solved, and high power transmission capabilities and miniaturized design are achieved.
Patent Information
- Application Number
- CN202420469782.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-03-11
AI Technical Summary
Existing Ethernet transformers are difficult to achieve high current PoE function at high transmission rates, resulting in poor performance in some applications with high power requirements.
A winding structure is designed, and by using a matching structure of thick and thin winding in the primary circuit and the secondary circuit, the Ethernet transformer has the function of passing through a high current PoE while meeting the high transmission rate.
It realizes that it can transmit large current at high transmission rates, with a power of about 90 watts, and is suitable for small package size Ethernet transformers, compatible with existing non-PoE small package size layouts.
Smart Images
Figure CN222826197U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, and in particular to a winding structure for an Ethernet transformer, an Ethernet transformer provided with the winding structure, a circuit board provided with the Ethernet transformer, and an Ethernet communication device provided with the circuit board. Background Art
[0002] Ethernet transformers mainly have the functions of signal transmission, impedance matching, waveform repair, signal noise suppression and high voltage isolation, and some existing Ethernet transformers can provide power for network devices and are widely used in Ethernet communication equipment (such as switches, routers, WiFi, etc.). However, the shortcomings of existing Ethernet transformers are: the winding wire diameter of Ethernet transformers is single, which makes it difficult to achieve high current PoE (Power over Ethernet) function at high transmission rate. Summary of the invention
[0003] In order to solve the above problems, the first object of the utility model is to provide a winding structure that can achieve high transmission rate and high current PoE function.
[0004] The second object of the utility model is to provide an Ethernet transformer provided with the above winding structure.
[0005] The third object of the utility model is to provide a circuit board provided with the above Ethernet transformer.
[0006] The fourth object of the utility model is to provide an Ethernet communication device provided with the above circuit board.
[0007] In order to achieve the first purpose of the utility model, the utility model provides a winding structure, including a magnetic core, a first winding and a second winding, the magnetic core has a winding column, wherein the magnetic core is provided with a first pin group and a second pin group, the first pin group includes a first pin, a second pin and a first pin unit, the second pin group includes a third pin, a fourth pin and a second pin unit, the first winding includes a first thin winding and a second thin winding, and the second winding includes a first thick winding and a second thick winding; one of the first pin and the second pin is electrically connected to the first end of the first thin winding, and the other is electrically connected to the first end of the first thick winding, and the second end of the first thin winding and the second end of the first thick winding are electrically connected to the first pin unit respectively; one of the third pin and the fourth pin is electrically connected to the first end of the second thin winding, and the other is electrically connected to the first end of the second thick winding, and the second end of the second thin winding and the second end of the second thick winding are electrically connected to the second pin unit respectively; the first thin winding and the second thin winding are alternately wound on the winding column, and the first thick winding and the second thick winding are alternately wound on the winding column.
[0008] As can be seen from the above, the winding structure adopts a coarse and fine winding structure in the primary circuit and a coarse and fine winding design in the secondary circuit, so that it can meet the high transmission rate and also have the function of passing high current PoE, and its power can reach about 90 watts; in addition, this winding structure can be applied to Ethernet transformers with small package sizes (such as 4532 package sizes), and can be compatible with existing non-PoE small package size layout Ethernet transformers, so that Ethernet transformers with small package sizes can also meet the power requirements of about 90 watts.
[0009] A preferred solution is that the first pin unit and the second pin unit are both single pins.
[0010] Another preferred solution is that the first pin unit includes a fifth pin and a sixth pin, one of the fifth pin and the sixth pin is electrically connected to the second end of the first thin winding, and the other is electrically connected to the second end of the first thick winding; the second pin unit includes a seventh pin and an eighth pin, one of the seventh pin and the eighth pin is electrically connected to the second end of the second thin winding, and the other is electrically connected to the second end of the second thick winding.
[0011] As can be seen from the above, the number of pins included in the first pin unit and the number of pins included in the second pin unit can be changed in design according to the use requirements; when the number of pins in the first pin unit and the number of pins in the second pin unit are both two, when the Ethernet transformer provided with the present winding structure is used, the pins of the first pin unit are short-circuited, and the pins of the second pin unit are short-circuited.
[0012] Another preferred solution is that the wire diameter of the first thin winding is equal to the wire diameter of the second thin winding, the wire diameter of the first thick winding is equal to the wire diameter of the second thick winding, and the wire diameter of the first thick winding is 1.2 to 1.8 times the wire diameter of the first thin winding.
[0013] As can be seen from the above, by designing the wire diameter ratio of the first thin winding, the second thin winding, the first thick winding and the second thick winding, the Ethernet transformer with the present winding structure can have the function of passing high current POE while meeting the high transmission rate.
[0014] Another preferred solution is that the second winding is wound outside the first winding; or the first winding is wound outside the second winding.
[0015] It can be seen from the above that by designing the relative positions of the first winding and the second winding and matching the wire diameter of the winding, the first winding and the second winding can be more compactly wound on the winding pole, which is more conducive to the arrangement of the windings and their windings and improves the coupling effect.
[0016] A further solution is that, in the axial direction of the winding post, the first pin, the second pin and the second pin unit are located at the first end of the winding post, and the third pin, the fourth pin and the second pin unit are located at the second end of the winding post; the first pin, the second pin, the second pin unit, the third pin, the fourth pin and the first pin unit are distributed in sequence around the winding post; the first pin group and the second pin group are integrally formed on the magnetic core, and the first pin group and the second pin group are located at the bottom of the magnetic core.
[0017] As can be seen from the above, by designing the position of each pin and pin unit relative to the winding column, the distribution of the winding can be more regular and orderly; and by designing the distribution position of each pin and pin unit, the pin position and circuit of the winding structure are rotationally symmetrical, so that the user does not need to distinguish between the primary and secondary of the winding structure during use, which makes it more convenient to use; in addition, the first pin group and the second pin group are integrally formed on the magnetic core, making the production of the winding structure more convenient and reducing the production cost.
[0018] In order to achieve the second objective of the utility model, the utility model provides an Ethernet transformer, which includes the above-mentioned winding structure.
[0019] As can be seen from the above, the Ethernet transformer is provided with the above winding structure, so that it can meet the requirements of high transmission rate while also having the function of passing high current PoE, and its power can reach about 90 watts.
[0020] A further solution is that the length of the Ethernet transformer is 4.6±0.2 mm, and the width of the Ethernet transformer is 3.4±0.2 mm; or the length of the Ethernet transformer is 4.5±0.2 mm, and the width of the Ethernet transformer is 3.2±0.2 mm.
[0021] As can be seen from the above, since the Ethernet transformer adopts the above winding structure, the Ethernet transformer can be better designed to be miniaturized.
[0022] In order to achieve the third purpose of the utility model, the utility model provides a circuit board, including a substrate, wherein the circuit board also includes the above-mentioned Ethernet transformer, the Ethernet transformer is installed on the substrate, and the first pin group and the second pin group are electrically connected to the substrate respectively.
[0023] As can be seen from the above, the circuit board can be adapted to load products that meet the requirements of high transmission rate and high current PoE by setting the above Ethernet transformer.
[0024] In order to achieve the fourth objective of the utility model, the utility model provides an Ethernet communication device, including a body, wherein the Ethernet communication device also includes the above-mentioned circuit board, and the circuit board is installed in the body.
[0025] As can be seen from the above, the Ethernet communication device provided by the utility model can meet the high transmission rate of the load product, and at the same time also has the function of passing high current PoE, which can provide up to about 90 watts of input power for the load product. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural diagram of the first embodiment of the Ethernet transformer of the utility model from a first viewing angle.
[0027] Figure 2 It is a structural diagram of the first embodiment of the Ethernet transformer of the utility model from a second viewing angle.
[0028] Figure 3 It is a structural diagram of the magnetic core of the first embodiment of the Ethernet transformer of the utility model.
[0029] Figure 4 This is a structural diagram of the connection between the magnetic core and the first thin winding of the first embodiment of the Ethernet transformer of the utility model.
[0030] Figure 5 This is a structural diagram of the connection between the magnetic core and the second thin winding of the first embodiment of the Ethernet transformer of the utility model.
[0031] Figure 6 This is a connection structure diagram of the magnetic core and the first winding of the first embodiment of the Ethernet transformer of the utility model.
[0032] Figure 7 This is a structural diagram of the connection between the magnetic core and the first thick winding of the first embodiment of the Ethernet transformer of the utility model.
[0033] Figure 8 This is a structural diagram of the connection between the magnetic core and the second thick winding of the first embodiment of the Ethernet transformer of the utility model.
[0034] Fig. 9 This is a schematic diagram of the circuit structure of the first embodiment of the Ethernet transformer of the utility model.
[0035] Fig.10 This is a schematic diagram of the circuit structure of the second embodiment of the Ethernet transformer of the utility model.
[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION
[0037] Ethernet transformer first embodiment
[0038] Reference Figure 1 and Figure 2The Ethernet transformer 100 includes a winding structure 101 and a magnetic core cover 102; wherein the winding structure 101 includes a magnetic core 1, a first winding 2 and a second winding 3. The magnetic core cover 102 is installed on the magnetic core 1, and the magnetic core cover 102 is located on the top of the magnetic core 1; the magnetic core 1 can provide certain protection for the winding structure 101, and the magnetic core cover 102 can serve as a nameplate to record the parameters, size specifications, type, etc. of the Ethernet transformer 100.
[0039] Combination Figure 3 , the magnetic core 1 has a winding post 11, so that the second winding 3 and the second winding 3 can be wound on the magnetic core 1 through the winding post 11. In addition, the magnetic core 1 is provided with a first pin group 12 and a second pin group 13, and the first pin group 12 and the second pin group 13 are both located at the bottom of the magnetic core 1; wherein the first pin group 12 includes a first pin 121, a second pin 122 and a first pin unit 123, and the second pin group 13 includes a third pin 131, a fourth pin 132 and a second pin unit 133. Preferably, the first pin 121, the second pin 122, the first pin unit 123, the third pin 131, the fourth pin 132 and the second pin unit 133 are integrally formed on the magnetic core 1; by integrally forming the first pin group 12 and the second pin group 13 on the magnetic core 1, the production of the winding structure 101 is more convenient, and it is conducive to reducing the production cost.
[0040] The first winding 2 includes a first thin winding 21 and a second thin winding 22, and the second winding 3 includes a first thick winding 31 and a second thick winding 32. Among them, one of the first pin 121 and the second pin 122 is electrically connected to the first end of the first thin winding 21, and the other is electrically connected to the first end of the first thick winding 31, and the second end of the first thin winding 21 and the second end of the first thick winding 31 are electrically connected to the first pin unit 123 respectively; one of the third pin 131 and the fourth pin 132 is electrically connected to the first end of the second thin winding 22, and the other is electrically connected to the first end of the second thick winding 32, and the second end of the second thin winding 22 and the second end of the second thick winding 32 are electrically connected to the second pin unit 133 respectively; and the first thin winding 21 and the second thin winding 22 are alternately wound on the winding column 11, and the first thick winding 31 and the second thick winding 32 are alternately wound on the winding column 11.
[0041] In addition, the wire diameter of the first thin winding 21 is equal to the wire diameter of the second thin winding 22, the wire diameter of the first thick winding 31 is equal to the wire diameter of the second thick winding 32, and the wire diameter of the first thick winding 31 is preferably 1.2 to 1.8 times the wire diameter of the first thin winding 21; by designing the wire diameter ratio of the first thin winding 21, the second thin winding 22, the first thick winding 31, and the second thick winding 32, the Ethernet transformer 100 provided with the present winding structure 101 can have the function of passing high current POE while meeting the high transmission rate. Preferably, the wire diameter of the first thick winding 31 is preferably 1.5 times the wire diameter of the first thin winding 21, so that the output power of the Ethernet transformer 100 can reach about 90 watts.
[0042] Combination Figures 4 to 9 As in the present embodiment, the first pin unit 123 and the second pin unit 133 are both single pin structures; the first end of the first thin winding 21 is electrically connected to the first pin 121, and the second end of the first thin winding 21 is electrically connected to the first pin unit 123; the first end of the second thin winding 22 is electrically connected to the third pin 131, and the second end of the second thin winding 22 is electrically connected to the second pin unit 133; the first end of the first thick winding 31 is electrically connected to the second pin 122, and the second end of the first thick winding 31 is electrically connected to the first pin unit 123; the first end of the second thick winding 32 is electrically connected to the fourth pin 132, and the second end of the second thick winding 32 is electrically connected to the second pin unit 133.
[0043] Preferably, the second winding 3 is wound on the outside of the first winding 2. In this embodiment, due to the design of the wire diameter and the number of winding turns of the first thin winding 21 and the second thin winding 22, when the first thin winding 21 and the second thin winding 22 are alternately wound on the winding post 11, they are just a layer of winding layers flatly wound on the outer layer of the winding post 11, so that the first winding 2 and the second winding 3 can be more compactly wound on the winding post 11, which is more conducive to the arrangement of each winding and its windings, and improves the coupling effect. Of course, in other embodiments, if the first thick winding 31 and the second thick winding 32 are alternately wound on the winding post 11 and can just be N (N≥1, and N is an integer) winding layers flatly wound on the outer layer of the winding post 11, it is preferred that the first winding 2 be wound on the outside of the second winding 3; thereby ensuring the arrangement of each winding and its windings, and improving the coupling effect.
[0044] Furthermore, on the axis of the winding post 11, the first pin 121, the second pin 122 and the second pin unit 133 are located at the first end of the winding post 11, and the third pin 131, the fourth pin 132 and the first pin unit 123 are located at the second end of the winding post 11. With this design, the distribution of each winding can be more regular and orderly.
[0045] Furthermore, the first pin 121, the second pin 122, the second pin unit 133, the third pin 131, the fourth pin 132 and the first pin unit 123 are sequentially distributed around the winding post 11. Through this design, the pin positions and circuits of the winding structure 101 are rotationally symmetrical (see Fig. 9 ), so that the user does not need to distinguish between the primary and secondary winding structures 101 during use, making it more convenient to use.
[0046] The winding structure 101 of the Ethernet transformer 100 provided by the utility model adopts a matching structure of thick and thin winding in the primary circuit and a matching winding design of thick and thin winding in the secondary circuit, so that it can satisfy the high transmission rate and also have the function of passing high current PoE, and its power can reach about 90 watts; in addition, the winding structure 101 can be applied to Ethernet transformers 100 with small package sizes (such as 4532 package size - referring to the length of the Ethernet transformer 100 is 4.5±0.2 mm, the width of the Ethernet transformer 100 is 3.2±0.2 mm; or close to 4532 package, such as the length of the Ethernet transformer is 4.6±0.2 mm; the width of the Ethernet transformer is 3.4±0.2 mm), and can be compatible with existing non-PoE small package size layout Ethernet transformers 100, so that the Ethernet transformer 100 with small package size can also meet the power requirement of about 90 watts; furthermore, the design of the winding structure 101 also enables the Ethernet transformer 100 to be better miniaturized. It should be noted that the package sizes to which the winding structure 101 can be applied include but are not limited to small-size packages, that is, the winding structure 101 can also be applied to other medium and large package sizes.
[0047] In summary, the Ethernet transformer 100 is provided with the winding structure 101 so that it can meet the requirements of high transmission rate while also having the function of passing high current PoE, and its power can reach about 90 watts.
[0048] Ethernet transformer second embodiment
[0049] Reference Fig.10 The difference between this embodiment and the first embodiment lies in the connection structure of the first pin group, the second pin group, the first winding and the second winding. Specifically, only the differences are described below. In this embodiment:
[0050] A first end of the first thick winding wire 411 is electrically connected to the first pin 431 , and a second end of the first thick winding wire 411 is electrically connected to the first pin unit 433 ;
[0051] The first end of the first thin winding wire 421 is electrically connected to the second pin 432 , and the second end of the first thin winding wire 421 is electrically connected to the first pin unit 433 ;
[0052] A first end of the second thick winding wire 412 is electrically connected to the third pin 441 , and a second end of the second thick winding wire 412 is electrically connected to the second pin unit 443 ;
[0053] A first end of the second thin winding wire 422 is electrically connected to the fourth pin 442 , and a second end of the second thin winding wire 422 is electrically connected to the second pin unit 443 .
[0054] Ethernet transformer third embodiment
[0055] The difference between this embodiment and the first embodiment and the second embodiment of the Ethernet transformer mentioned above lies in the structure of the first pin unit, the structure of the second pin unit, the connection structure of the first pin unit with the first winding and the second winding, and the connection structure of the second pin unit with the first winding and the second winding. Specifically, only the differences are described below. In this embodiment:
[0056] The first pin unit includes a fifth pin and a sixth pin; wherein one of the fifth pin and the sixth pin is electrically connected to the second end of the first thin winding wire, and the other is electrically connected to the second end of the first thick winding wire.
[0057] The second pin unit includes a seventh pin and an eighth pin; wherein one of the seventh pin and the eighth pin is electrically connected to the second end of the second thin winding wire, and the other is electrically connected to the second end of the second thick winding wire.
[0058] Through this design, the number of pins included in the first pin unit and the number of pins included in the second pin unit can be changed according to the use requirements; and when the number of pins in the first pin unit and the number of pins in the second pin unit are both two, the fifth pin and the sixth pin are short-circuited, and the seventh pin and the eighth pin are short-circuited when the Ethernet transformer is used.
[0059] Circuit board embodiment
[0060] The circuit board includes a substrate and an Ethernet transformer; wherein the Ethernet transformer is the Ethernet transformer described in any one of the first to third embodiments of the Ethernet transformer. The Ethernet transformer is mounted on the substrate, and the first pin group and the second pin group are electrically connected to the substrate respectively. By setting the above-mentioned Ethernet transformer, the circuit board can be adapted to load products that meet the requirements of high transmission rate and high current PoE.
[0061] Ethernet communication device embodiment
[0062] The Ethernet communication device includes a body and a circuit board in the above circuit board embodiment, and the circuit board is installed in the body. By setting the above circuit board, the Ethernet communication device can meet the high transmission rate of the load product, and also has the function of passing high current PoE, which can provide up to about 90 watts of input power for the load product.
[0063] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A winding structure, comprising a magnetic core, a first winding and a second winding, wherein the magnetic core has a winding column, characterized in that: The magnetic core is provided with a first pin group and a second pin group, the first pin group includes a first pin, a second pin and a first pin unit, the second pin group includes a third pin, a fourth pin and a second pin unit, the first winding includes a first thin winding wire and a second thin winding wire, and the second winding includes a first thick winding wire and a second thick winding wire; One of the first pin and the second pin is electrically connected to the first end of the first thin winding wire, and the other is electrically connected to the first end of the first thick winding wire, and the second end of the first thin winding wire and the second end of the first thick winding wire are electrically connected to the first pin unit respectively; One of the third pin and the fourth pin is electrically connected to the first end of the second thin winding wire, and the other is electrically connected to the first end of the second thick winding wire, and the second end of the second thin winding wire and the second end of the second thick winding wire are electrically connected to the second pin unit respectively; The first thin winding wire and the second thin winding wire are alternately wound on the winding pole, and the first thick winding wire and the second thick winding wire are alternately wound on the winding pole.
2. The winding structure according to claim 1, characterized in that: The first pin unit and the second pin unit are both single pins.
3. The winding structure according to claim 1, characterized in that: The first pin unit includes a fifth pin and a sixth pin, one of the fifth pin and the sixth pin is electrically connected to the second end of the first thin winding wire, and the other is electrically connected to the second end of the first thick winding wire; The second pin unit includes a seventh pin and an eighth pin, one of which is electrically connected to the second end of the second thin winding wire, and the other of which is electrically connected to the second end of the second thick winding wire.
4. The winding structure according to claim 1, characterized in that: The wire diameter of the first thin winding is equal to the wire diameter of the second thin winding, the wire diameter of the first thick winding is equal to the wire diameter of the second thick winding, and the wire diameter of the first thick winding is 1.2 to 1.8 times the wire diameter of the first thin winding.
5. The winding structure according to claim 1, characterized in that: The second winding is wound outside the first winding; or The first winding is wound on the outside of the second winding.
6. The winding structure according to any one of claims 1 to 5, characterized in that: In the axial direction of the winding post, the first pin, the second pin and the second pin unit are located at the first end of the winding post, and the third pin, the fourth pin and the second pin unit are located at the second end of the winding post; The first pin, the second pin, the second pin unit, the third pin, the fourth pin and the first pin unit are sequentially distributed around the winding column; The first pin group and the second pin group are integrally formed on the magnetic core, and the first pin group and the second pin group are located at the bottom of the magnetic core.
7. Ethernet transformer, characterized in that, Comprising the winding structure according to any one of claims 1 to 6.
8. The Ethernet transformer according to claim 7, characterized in that: The length of the Ethernet transformer is 4.6±0.2 mm, and the width of the Ethernet transformer is 3.4±0.2 mm; or The length of the Ethernet transformer is 4.5±0.2 mm, and the width of the Ethernet transformer is 3.2±0.2 mm.
9. A circuit board, comprising a substrate, characterized in that: The circuit board further comprises the Ethernet transformer as claimed in claim 7 or 8, wherein the Ethernet transformer is mounted on the substrate, and the first pin group and the second pin group are electrically connected to the substrate respectively.
10. An Ethernet communication device, comprising a body, characterized in that: The Ethernet communication device further comprises the circuit board as claimed in claim 9, wherein the circuit board is mounted in the body.