Magnetic device and electronic apparatus

Abstract

The utility model provides a magnetic device and electronic equipment, and belongs to the technical field of heat dissipation. The magnetic device comprises a magnetic core, a multi-turn coil and a comb tooth framework. The multi-turn coil winds the magnetic core. The comb tooth framework comprises a ridge plate and a plurality of teeth, and the teeth are fixed to the same portion of the ridge plate. The teeth extend into the space between every two adjacent turns of coils of the multiple turns of coils, so that an air channel is formed between every two adjacent turns of coils. Therefore, when wind blows to the magnetic device, the wind flows through the air channel between the two adjacent turns of coils, and heat generated by the coils can be taken away, so that the heat dissipation efficiency of the magnetic device is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of heat dissipation technology, and in particular to a magnetic device and an electronic device. Background Art

[0002] Magnetic devices, such as power inductors, play roles in energy storage, filtering and isolation in various power circuits.

[0003] When a power inductor passes a large current, the temperature may be too high. Therefore, from the perspective of safety and reliability, it is necessary to ensure effective heat dissipation of the magnetic components. Utility Model Content

[0004] The present disclosure provides a magnetic device and an electronic device. The magnetic device includes a comb tooth frame, the teeth of which extend between two adjacent turns of the coil, so that an air duct is formed between the two adjacent turns of the coil. Thus, the heat dissipation efficiency of the magnetic device is improved. The technical solutions of the magnetic device and the electronic device are as follows.

[0005] In a first aspect, the present disclosure provides a magnetic device. The magnetic device includes a magnetic core, a multi-turn coil and a comb tooth frame. The multi-turn coil is wound around the magnetic core. The comb tooth frame includes a ridge plate and a plurality of teeth, and the plurality of teeth are fixed to the same surface of the ridge plate. At least some of the plurality of teeth extend between two adjacent turns of the multi-turn coil, so that an air duct is formed between the two adjacent turns of the coil.

[0006] The magnetic device is an inductor or a transformer. The inductor can be a power inductor. The magnetic core refers to a sintered magnetic metal oxide composed of a mixture of various iron oxides, which has the characteristics of high magnetic permeability and high magnetic flux density. The multi-turn coil can be a flat wire coil or a twisted pair coil. The comb tooth skeleton includes a ridge plate and a plurality of teeth, the ridge plate is used to fix the plurality of teeth, and the teeth are used to keep two adjacent turns of the coil in a spaced state so that an air duct is formed between the two adjacent turns of the coil.

[0007] The technical solution provided by the present disclosure is to form an air duct for air flow between two adjacent turns of coils by arranging the magnetic device to include a comb tooth frame, and arranging the teeth of the comb tooth frame to extend between two adjacent turns of coils. In this way, when wind blows toward the magnetic device, the wind can flow in the air duct and take away the heat generated by the coil and the magnetic core. Thereby, the heat dissipation efficiency of the magnetic device is improved, and it can be ensured that the overall temperature of the magnetic device is within the derating range under the working conditions of large pressure difference and large current, so as to prevent the inductor saturation caused by excessive temperature.

[0008] In a possible implementation, the comb-tooth frame is clamped on the multi-turn coil by a plurality of teeth, wherein the teeth extend between two adjacent turns of the coil to separate the two adjacent turns of the coil and are clamped by the two adjacent turns of the coil, thereby making the comb-tooth frame clamped on the multi-turn coil.

[0009] In a possible implementation, the magnetic device includes at least two comb-tooth skeletons, and the at least two comb-tooth skeletons are arranged along the circumference of the multi-turn coil, and there is a gap between two adjacent comb-tooth skeletons.

[0010] The technical solution provided by the present disclosure is to provide a magnetic device including at least two comb tooth frames, so that there are at least two teeth between two adjacent turns of coils, and there is a gap between the at least two teeth. Thus, the stability of the teeth supporting the two adjacent turns of coils is improved, so that the two adjacent turns of coils can be stably maintained in a gap state, and the air duct is not easily damaged by external forces.

[0011] In a possible implementation, the plurality of teeth included in the comb tooth skeleton are arranged into at least two rows, and the at least two rows of teeth are arranged along the circumference of the multi-turn coil, and there is a gap between two adjacent rows of teeth.

[0012] The technical solution provided by the present disclosure is to provide a comb tooth skeleton including two rows of teeth, so that there are at least two teeth between two adjacent turns of coils, and there is a gap between the at least two teeth. Thus, the stability of the teeth supporting the two adjacent turns of coils is improved, so that the two adjacent turns of coils can be stably maintained in a gap state, and the air duct is not easily damaged by external forces.

[0013] In a possible implementation, the ridge plate is located on a side of the multi-turn coil away from the magnetic core. In this way, when the multi-turn coil is looped around the magnetic core, the ridge plate will not interfere with the magnetic core (or the isolation frame between the magnetic core and the multi-turn coil). Thus, the assembly efficiency of the magnetic device is improved.

[0014] In a possible implementation, the ridge plate is located between the magnetic core and the multi-turn coil.

[0015] In a possible implementation, there is a gap between the magnetic core and the multi-turn coil. The air duct connects the gap and the side of the multi-turn coil away from the magnetic core. In this way, when the wind flows along the air duct, it can take away the heat generated by the coil and the heat generated by the magnetic core, further improving the heat dissipation efficiency of the magnetic device.

[0016] In a possible implementation, the length of the teeth extending between two adjacent turns of the coil is less than or equal to the width of the wire in the multi-turn coil.

[0017] The technical solution provided by the present disclosure, through the above arrangement, makes the teeth not extend relative to the multi-turn coil. In the case where the spine plate is located outside the multi-turn coil, the teeth will not extend into the inside of the multi-turn coil. Therefore, the teeth will not interfere with the magnetic core (or the isolation frame between the magnetic core and the multi-turn coil), making the assembly of the magnetic device easier.

[0018] In a possible implementation, the ratio of the length of the teeth extending between two adjacent turns of the coil to the width of the wire in the multi-turn coil is greater than 20%. In this way, it is possible to avoid the length of the teeth extending between two adjacent turns of the coil being too short, thereby ensuring the stability of the teeth supporting the two adjacent turns of the coil, and the air duct is not easily damaged by external forces.

[0019] In a possible implementation, the ratio of the length of the teeth extending between two adjacent turns of the coil to the width of the wire in the multi-turn coil is greater than 30%.

[0020] In a possible implementation, the ratio of the length of the teeth extending between two adjacent turns of the coil to the width of the wire in the multi-turn coil is greater than 40%.

[0021] In a possible implementation, the ratio of the width of the teeth to the circumference of one turn of the coil is greater than 0.5% and less than 10%.

[0022] In this way, the width of the tooth is smaller than the circumference of one turn of the coil, so that the length of the air duct occupied by the tooth is shorter, the flowability of the air duct is improved, and it is beneficial to improve the heat dissipation efficiency of the magnetic device.

[0023] In a possible implementation, the ratio of the width of the tooth to the circumference of one turn of the coil is greater than 1% and less than 5%.

[0024] In a possible implementation, the ratio of the width of the comb-teeth skeleton to the circumference of one turn of the coil is greater than 0.5% and less than 10%.

[0025] In this way, the width of the comb-tooth skeleton is shorter than the circumference of one turn of the coil, and the comb-tooth skeleton is in the shape of a long strip. The comb-tooth skeleton can adapt to various irregular-shaped magnetic cores and multi-turn coils.

[0026] In a possible implementation, the ratio of the width of the comb-teeth skeleton to the circumference of one turn of the coil is greater than 1% and less than 5%.

[0027] In a possible implementation, the number of turns of the coil is N, and the comb tooth skeleton includes N-1 teeth. The N-1 teeth extend respectively between each two adjacent turns of the coil in the N turns, so as to form an air duct between each two adjacent turns of the coil in the N turns. Thus, the heat dissipation efficiency of the magnetic device is further improved.

[0028] In a possible implementation, the side of the spine plate fixed with teeth contacts the outer side of the multi-turn coil, and the part of the multi-turn coil that contacts the spine plate is arc-shaped. The side of the spine plate fixed with teeth is an arc surface, and is a concave surface. In this way, the contact area between the spine plate and the multi-turn coil is larger, and the comb tooth frame can be more stably installed on the multi-turn coil.

[0029] In a possible implementation, the side of the spine plate fixed with teeth contacts the inner side of the multi-turn coil, and the part of the multi-turn coil that contacts the spine plate is arc-shaped. The side of the spine plate fixed with teeth is an arc surface, and is a convex surface. In this way, the contact area between the spine plate and the multi-turn coil is larger, and the comb tooth frame can be more stably installed on the multi-turn coil.

[0030] In a possible implementation, the side of the spine plate fixed with teeth contacts the outer side or inner side of the multi-turn coil, and the part of the multi-turn coil contacting the spine plate is straight. The side of the spine plate fixed with teeth is a plane.

[0031] In a possible implementation, the magnetic device further includes an isolation frame. The isolation frame is located between the magnetic core and the multi-turn coil, so that there is a gap between the magnetic core and the multi-turn coil.

[0032] In a possible implementation, the ridge plate is located between the magnetic core and the multi-turn coil, so that there is a gap between the magnetic core and the multi-turn coil.

[0033] In a second aspect, the present disclosure provides an electronic device, comprising a fan and a magnetic device as described in any one of the first aspects, wherein the wind blown by the fan flows through the wind channel of the magnetic device to dissipate heat from the magnetic device.

[0034] The electronic device is a direct current to direct current (DC-DC), a power conversion system (PCS) or an uninterruptible power supply (UPS), etc. The electronic device may be located in the energy storage system.

[0035] The technical solution provided by the present disclosure is that the multi-turn coil of the magnetic device included in the electronic device has an air duct. When the wind blown by the fan blows toward the magnetic device, the wind will flow through the air duct and take away the heat generated by the coil and the magnetic core. Thereby, the heat dissipation efficiency of the magnetic device is improved, and then the heat dissipation efficiency of the electronic device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a three-dimensional schematic diagram of a magnetic device provided by an embodiment of the present disclosure;

[0037] Figure 2 is a side view of a magnetic device provided by an embodiment of the present disclosure;

[0038] Figure 3 The embodiment of the present disclosure provides Figure 2 A partial enlarged view of the portion framed by a dotted line in FIG.

[0039] Figure 4is a schematic diagram of a first comb tooth skeleton provided by an embodiment of the present disclosure;

[0040] Figure 5 is a schematic diagram of a second comb tooth skeleton provided in an embodiment of the present disclosure;

[0041] Figure 6 is a schematic diagram of a first contact surface of a comb tooth skeleton provided in an embodiment of the present disclosure;

[0042] Figure 7 is a schematic diagram of a coil and a comb tooth skeleton provided in an embodiment of the present disclosure;

[0043] Figure 8 is a schematic diagram of a second contact surface of a comb tooth skeleton provided in an embodiment of the present disclosure;

[0044] Fig. 9 is a schematic diagram of another coil and comb tooth skeleton provided in an embodiment of the present disclosure;

[0045] Fig.10 is a schematic diagram of a third contact surface of a comb tooth skeleton provided in an embodiment of the present disclosure;

[0046] Fig.11 is a schematic diagram of another coil and comb tooth skeleton provided in an embodiment of the present disclosure;

[0047] Fig.12 is a schematic diagram of a third comb tooth skeleton provided in an embodiment of the present disclosure;

[0048] Fig.13 is a schematic diagram of the length of the teeth and the width of the wire provided in an embodiment of the present disclosure;

[0049] Fig.14 is a schematic diagram of another coil and comb tooth skeleton provided in an embodiment of the present disclosure;

[0050] Fig.15 is a three-dimensional schematic diagram of another magnetic device provided by an embodiment of the present disclosure;

[0051] Fig.16 It is a schematic diagram of an electronic device provided by an embodiment of the present disclosure.

[0052] Legend

[0053] 100. Magnetic device; 200. Fan; 300. Shell; 1. Magnetic core; 2. Coil; 20. Air duct; 21. Gap; 3. Comb tooth frame; 31. Ridge plate; 310. Contact surface; 32. Teeth; 4. Isolation frame. DETAILED DESCRIPTION

[0054] Magnetic components, such as power inductors, play a role in energy storage, filtering, and isolation in various power circuits. When a power inductor passes a large current, especially in a high temperature environment, it is very easy to have the risk of device temperature over-derating. In severe cases, the magnetic core of the power inductor may lose its magnetic conductivity, causing the entire power circuit to fail. Therefore, from the perspective of safety and reliability, it is necessary to ensure effective heat dissipation of magnetic components.

[0055] The magnetic device in the related art includes a magnetic core and a multi-turn coil. The multi-turn coil is wound around the magnetic core, and two adjacent turns of the multi-turn coil are in contact, which makes it difficult for the heat generated by the magnetic device to dissipate.

[0056] In view of the above technical problems, an embodiment of the present disclosure provides a magnetic device. An air duct 20 is provided between two adjacent turns of the multi-turn coil 2 of the magnetic device, so that the heat dissipation efficiency of the magnetic device is high. The magnetic device provided by the embodiment of the present disclosure is exemplarily described below.

[0057] like Figure 1-Figure 3 As shown, the magnetic device includes a magnetic core 1, a multi-turn coil 2 and a comb-tooth frame 3. The multi-turn coil 2 is wound around the magnetic core 1. Figure 4 As shown, the comb tooth skeleton 3 includes a ridge plate 31 and a plurality of teeth 32, and the plurality of teeth 32 are fixed to the same surface of the ridge plate 31. At least some of the plurality of teeth 32 extend between two adjacent turns of the multi-turn coil 2, so that an air duct 20 is formed between the two adjacent turns of the coil 2.

[0058] The embodiments of the present disclosure do not limit the specific type of the magnetic device. In some examples, the magnetic device is an inductor or a transformer, etc., and the inductor can be a power inductor.

[0059] The coil 2 may be a coil 2 formed of a flat wire, or may be a coil 2 formed of a twisted pair. It should be noted that the drawings provided in the embodiments of the present disclosure are described by taking the coil 2 formed of a flat wire as an example.

[0060] The comb tooth skeleton 3 includes a ridge plate 31 and a plurality of teeth 32. The ridge plate 31 is used to fix the plurality of teeth 32. The teeth 32 are used to keep two adjacent turns of the coil 2 in a spaced state, so that an air duct 20 is formed between the two adjacent turns of the coil 2.

[0061] The technical solution provided by the embodiment of the present disclosure is to provide a magnetic device including a comb tooth skeleton 3, and to provide a comb tooth skeleton 3 with teeth 32 extending between two adjacent turns of the coil 2, so that an air duct 20 for ventilation is formed between two adjacent turns of the coil 2. In this way, when wind blows toward the magnetic device, the wind can flow in the air duct 20 and can take away the heat generated by the coil 2. Thus, the heat dissipation efficiency of the magnetic device is improved, and it can be ensured that the overall temperature of the magnetic device is within the derating range under the working conditions of large pressure difference and large current, so as to prevent the inductor saturation caused by excessive temperature.

[0062] In some examples, such as Figure 1 As shown, the magnetic device further includes an isolation frame 4. The isolation frame 4 is located between the magnetic core 1 and the multi-turn coil 2, so that there is a gap between the magnetic core 1 and the multi-turn coil 2.

[0063] In some examples, such as Figure 1 As shown, there are multiple isolation frames 4, and the multiple isolation frames 4 are arranged along the circumference of the multi-turn coil 2. Figure 1 As shown, there is a gap between two adjacent isolation frames 4.

[0064] In some examples, such as Figure 1 As shown, the comb tooth frame 3 is clamped on the multi-turn coil 2 through a plurality of teeth 32. The teeth 32 extend between two adjacent turns of the coil 2 to separate the two adjacent turns of the coil 2, and the teeth 32 are also clamped by the two adjacent turns of the coil 2, so that the comb tooth frame 3 is clamped on the multi-turn coil 2.

[0065] In some examples, such as Figure 1 As shown, there is a gap 21 between the magnetic core 1 and the multi-turn coil 2. The air duct 20 connects the gap 21 and the side of the multi-turn coil 2 away from the magnetic core 1. In this way, when the wind flows through the air duct 20, it can not only take away the heat generated by the coil 2, but also take away the heat generated by the magnetic core 1, further improving the heat dissipation efficiency of the magnetic device. Among them, the gap 21 between the magnetic core 1 and the multi-turn coil 2 can be formed after the isolation frame 4 separates the magnetic core 1 and the multi-turn coil 2.

[0066] The embodiment of the present disclosure does not limit the number of comb teeth skeletons 3 included in the magnetic device. In some examples, for example, Figure 2 and Fig.12 As shown, the magnetic device includes a plurality of comb-tooth skeletons 3, which are arranged along the circumference of the multi-turn coil 2, and there is a gap between two adjacent comb-tooth skeletons 3. The plurality of comb-tooth skeletons 3 are two or more comb-tooth skeletons 3.

[0067] The technical solution provided by the embodiment of the present disclosure is to provide a plurality of comb tooth skeletons 3 by arranging the magnetic device so that there are a plurality of teeth 32 between two adjacent turns of the coil 2, and there is a gap between the plurality of teeth 32. In this way, the stability of the teeth 32 supporting the two adjacent turns of the coil 2 is improved, so that the two adjacent turns of the coil 2 can be stably maintained in a gap state, and the air duct 20 is not easily damaged by external forces.

[0068] In some examples, such as Figure 2 As shown, a plurality of comb-tooth skeletons 3 are evenly distributed along the circumference of the multi-turn coil 2 .

[0069] In addition to the technical solution of setting the magnetic device to include a plurality of comb teeth skeletons 3, in other examples, such as Figure 5As shown, the comb tooth skeleton 3 includes a plurality of teeth 32 arranged in a plurality of rows, the plurality of rows of teeth 32 are arranged along the circumference of the multi-turn coil 2, and there is a gap between two adjacent rows of teeth 32. The plurality of rows of teeth 32 are two or more rows of teeth 32.

[0070] The technical solution provided by the embodiment of the present disclosure, by arranging the multiple teeth 32 included in the comb tooth skeleton 3 into multiple rows, also realizes that there are multiple teeth 32 between two adjacent turns of coils 2, and there is a gap between the multiple teeth 32. In this way, the stability of the teeth 32 supporting the two adjacent turns of coils 2 is improved, so that the two adjacent turns of coils 2 are stably maintained in a gap state, and the air duct 20 is not easily damaged by external forces.

[0071] Of course, the technical solutions that the magnetic device includes multiple comb tooth skeletons 3 and a single comb tooth skeleton 3 includes multiple rows of teeth 32 can be adopted at the same time. That is, in some examples, the magnetic device includes multiple comb tooth skeletons 3, and the multiple comb tooth skeletons 3 are arranged along the circumference of the multi-turn coil 2. Moreover, at least one comb tooth skeleton 3 includes multiple rows of teeth 32.

[0072] The embodiment of the present disclosure does not limit the position of the comb tooth skeleton 3. In some examples, such as Figure 1-Figure 3 As shown, the ridge plate 31 is located on the side of the multi-turn coil 2 away from the magnetic core 1. In this way, when the multi-turn coil 2 is looped around the magnetic core 1, the ridge plate 31 will not interfere with the magnetic core 1 (or the isolation frame 4 between the magnetic core 1 and the multi-turn coil 2), making the assembly of the magnetic device easier.

[0073] For the case where the ridge plate 31 is located on the side of the multi-turn coil 2 away from the magnetic core 1, in some examples, such as Figure 1 As shown, the side of the ridge plate 31 fixed with the teeth 32 is in contact with the ridge plate 31, and the part of the multi-turn coil 2 in contact with the ridge plate 31 is in an arc shape. Figure 6 As shown, the side of the spine plate 31 where the teeth 32 are fixed is an arc surface and a concave surface. In this way, the contact area between the spine plate 31 and the multi-turn coil 2 is larger, and the comb tooth frame 3 can be installed on the multi-turn coil 2 more stably.

[0074] In other examples, such as Figure 7 As shown in FIG. 1 , the portion of the multi-turn coil 2 that contacts the ridge plate 31 is straight. Figure 8 As shown, the side of the ridge plate 31 on which the teeth are fixed is a flat surface.

[0075] In some examples, such as Fig. 9 As shown, the ridge plate 31 is located between the multi-turn coil 2 and the magnetic core 1 .

[0076] For the case where the ridge plate 31 is located between the multi-turn coil 2 and the magnetic core 1, in some examples, such as Fig. 9As shown, the side of the ridge plate 31 fixed with the teeth 32 is in contact with the ridge plate 31, and the part of the multi-turn coil 2 in contact with the ridge plate 31 is in an arc shape. Fig.10 As shown, the side of the spine plate 31 where the teeth 32 are fixed is an arc surface and a convex surface. In this way, the contact area between the spine plate 31 and the multi-turn coil 2 is larger, and the comb tooth frame 3 can be installed on the multi-turn coil 2 more stably.

[0077] Of course, in other examples, if the portion of the multi-turn coil 2 that contacts the ridge plate 31 is straight, the contact surface 310 of the ridge plate 31 that is used to contact the multi-turn coil 2 is a plane.

[0078] In addition to the above-mentioned technical solution that the comb tooth skeleton 3 includes a ridge plate 31, in other examples, such as Fig.11 and Fig.12 As shown, the comb tooth skeleton 3 includes two ridge plates 31, and the two ridge plates 31 are respectively fixedly connected to the two ends of each tooth 32. The two ridge plates 31 are respectively located on the inner side and the outer side of the multi-turn coil 2.

[0079] Next, the dimensions of the comb tooth skeleton 3 will be exemplified.

[0080] In some examples, such as Fig.13 As shown, the length L1 of the teeth 32 extending into the space between two adjacent turns of the coil 2 is less than or equal to the width L2 of the wire in the coil 2. In this way, the teeth 32 will not extend relative to the multi-turn coil 2. In the case where the ridge plate 31 is located outside the multi-turn coil 2, the teeth 32 will not extend into the inside of the multi-turn coil 2. Therefore, in the process of wrapping the multi-turn coil 2 around the magnetic core 1, the teeth 32 will not interfere with the magnetic core 1 (or the isolation frame 4 between the magnetic core 1 and the multi-turn coil 2), making the assembly of the magnetic device easier.

[0081] In some examples, such as Fig.13 As shown, the ratio of the length L1 of the tooth 32 extending between two adjacent turns of the coil 2 to the width L2 of the wire in the multi-turn coil 2 is greater than 20%. In this way, it is possible to avoid the length of the tooth 32 extending between two adjacent turns of the coil 2 being too short, and the stability of the tooth 32 supporting the two adjacent turns of the coil 2 can be ensured.

[0082] In some examples, such as Fig.13 As shown, the ratio of the length L1 of the tooth 32 extending between two adjacent turns of the coil 2 to the width L2 of the wire in the coil 2 is greater than 30%.

[0083] In some examples, such as Fig.13 As shown, the ratio of the length L1 of the tooth 32 extending between two adjacent turns of the coil 2 to the width L2 of the wire in the coil 2 is greater than 40%.

[0084] In some examples, such as Fig.14As shown, the ratio of the width L3 of the tooth 32 to the circumference of one turn of the coil 2 is greater than 0.5% and less than 10%.

[0085] In this way, the width L3 of the tooth 32 is shorter than the circumference of one turn of the coil 2, so that the length of the air duct 20 occupied by the tooth 32 is shorter, which is beneficial to improving the heat dissipation efficiency of the magnetic device.

[0086] Furthermore, in some examples, such as Fig.14 As shown, the ratio of the width L3 of the tooth 32 to the circumference of one turn of the coil 2 is greater than 1% and less than 5%.

[0087] In some examples, such as Fig.14 As shown, the ratio of the width L3 of the comb-tooth skeleton 3 to the circumference of one turn of the coil 2 is greater than 0.5% and less than 10%.

[0088] In this way, the width of the comb-tooth skeleton 3 is shorter than the circumference of one turn of the coil 2, and the comb-tooth skeleton 3 is in a long strip shape, so the comb-tooth skeleton 3 can adapt to various irregular shapes of magnetic cores 1 and coils 2. It can be understood that multiple comb-tooth skeletons 3 can be adaptively arranged according to the shape of multiple turns of the coil 2 to be suitable for magnetic cores 1 and coils 2 of various shapes.

[0089] In some examples, such as Fig.14 As shown, the ratio of the width L3 of the comb-tooth skeleton 3 to the circumference of one turn of the coil 2 is greater than 1% and less than 5%.

[0090] In some examples, the width of the teeth 32 is equal to the width of the ridge plate 31 . That is, the width of the comb tooth skeleton 3 is the width of the teeth 32 or the width of the ridge plate 31 .

[0091] The embodiment of the present disclosure does not limit the number of teeth 32 included in the comb tooth skeleton 3. In some examples, for example, Fig.14 As shown, the number of turns of the coil 2 is N, and the comb tooth skeleton 3 includes at least N-1 teeth 32. The N-1 teeth 32 extend respectively between each two adjacent turns of the coil 2 in the N turns of the coil 2, so as to form an air duct 20 between each two adjacent turns of the coil 2. Thus, the heat dissipation efficiency of the magnetic device is further improved. For example, Fig.14 As shown, the number of turns of the coil 2 is 11, and the comb tooth skeleton 3 includes 10 teeth 32.

[0092] In some examples, the spacing between two adjacent teeth 32 is greater than the thickness of the wire in the coil 2 , so that the wire can be inserted between two adjacent teeth 32 . The thickness of the teeth 32 is the height of each air duct 20 .

[0093] It should be noted that if Fig.15As shown, in the case where the ridge plate 31 is located between the magnetic core 1 and the multi-turn coil 2, in some examples, the two sides of the ridge plate 31 are respectively against the magnetic core 1 and the multi-turn coil 2, and isolate the magnetic core 1 and the multi-turn coil 2. That is, the comb-tooth skeleton 3 also plays the role of the isolation skeleton 4, and the magnetic device may not have the isolation skeleton 4.

[0094] The material of the comb tooth skeleton 3 is not limited in the disclosed embodiment. In some examples, the material of the comb tooth skeleton 3 is a high temperature resistant and high voltage insulating material such as polyphenylene sulfide (PPS) or epoxy resin.

[0095] The embodiment of the present disclosure does not limit the molding method of the comb tooth skeleton 3. In some examples, the comb tooth skeleton 3 is integrally molded.

[0096] Next, a specific magnetic device is provided.

[0097] In some examples, such as Figure 1 As shown, the magnetic device includes a magnetic core 1, a multi-turn coil 2, a comb-tooth frame 3 and an isolation frame 4. The multi-turn coil 2 is wound around the magnetic core 1, and the isolation frame 4 is located between the magnetic core 1 and the multi-turn coil 2, and isolates the magnetic core 1 from the multi-turn coil 2. The ridge plate 31 is located on the side of the multi-turn coil 2 away from the magnetic core 1, and the teeth 32 of the comb-tooth frame 3 extend between two adjacent turns of the coil 2, so that an air duct 20 is formed between the two adjacent turns of the coil 2.

[0098] In some examples, such as Figure 1 As shown, the multi-turn coil 2 includes four side portions. Among them, a pair of two opposite side portions are straight, and the other two opposite side portions are arc-shaped. There are two comb tooth skeletons 3, and the two comb tooth skeletons 3 are respectively located at the two arc-shaped side portions. Among them, exemplarily, the arc-shaped side portion is shorter than the straight side portion.

[0099] The present disclosure also provides an electronic device. Fig.16 As shown, the electronic device includes a magnetic device 100 and a fan 200. The wind blown by the fan 200 flows through the wind channel 20 of the magnetic device 100 to dissipate heat from the magnetic device 100.

[0100] The electronic device provided in the embodiment of the present disclosure is a direct current to direct current (DC-DC), a power conversion system (PCS) or an uninterruptible power supply (UPS), etc. The electronic device may be located in the energy storage system.

[0101] The technical solutions provided by the embodiments of the present disclosure are as follows: Fig.16As shown, there is an air duct 20 between two adjacent turns of the multi-turn coil 2 included in the magnetic device 100. The wind blown by the fan 200 will flow through the air duct 20 and take away the heat generated by the wires on both sides of the air duct 20 and the magnetic core 1. Thus, the heat dissipation efficiency of the magnetic device 100 and the electronic device is improved, and the reliable and safe operation of the magnetic device 100 is ensured.

[0102] In addition, if Fig.14 As shown, the electronic device further includes a housing 300 . The magnetic device 100 and the fan 200 are located inside the housing 300 .

[0103] In some examples, such as Fig.14 As shown, the housing 300 has a passage communicating with the outside, so that the fan 200 blows the heated wind to the outside of the housing 300 .

[0104] The terms used in the embodiments of the present disclosure are only used to explain the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be the common meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate a quantity limit, but indicate that there is at least one. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. "Multiple" refers to two or more, unless otherwise clearly defined.

[0105] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A magnetic device, characterized in that: The magnetic device comprises a magnetic core (1), a multi-turn coil (2) and a comb tooth frame (3); The multi-turn coil (2) is wound around the magnetic core (1); The comb tooth skeleton (3) comprises a ridge plate (31) and a plurality of teeth (32), wherein the plurality of teeth (32) are fixed on the same surface of the ridge plate (31); At least some of the teeth (32) among the plurality of teeth (32) extend between two adjacent turns of the multi-turn coil (2), so that an air duct (20) is formed between the two adjacent turns of the coil (2).

2. The magnetic device according to claim 1, characterized in that: The comb tooth skeleton (3) is clamped onto the multi-turn coil (2) via the multiple teeth (32).

3. The magnetic device according to claim 1, characterized in that: The magnetic device comprises at least two comb-tooth skeletons (3), wherein the at least two comb-tooth skeletons (3) are arranged along the circumference of the multi-turn coil (2), and there is a gap between two adjacent comb-tooth skeletons (3).

4. The magnetic device according to claim 1, characterized in that: The ridge plate (31) is located on a side of the multi-turn coil (2) away from the magnetic core (1).

5. The magnetic device according to claim 1, characterized in that: There is a gap (21) between the magnetic core (1) and the multi-turn coil (2); The air duct (20) connects the gap with a side of the multi-turn coil (2) away from the magnetic core (1).

6. The magnetic device according to any one of claims 1 to 5, characterized in that: The length of the teeth (32) extending between two adjacent turns of the coil (2) is less than or equal to the width of the wire in the coil (2).

7. The magnetic device according to claim 6, characterized in that: The ratio of the length of the teeth (32) extending between two adjacent turns of the coil (2) to the width of the wire in the multi-turn coil (2) is greater than 20%.

8. The magnetic device according to any one of claims 1 to 5, characterized in that: The ratio of the width of the tooth (32) to the circumference of one turn of the coil (2) is greater than 0.5% and less than 10%.

9. The magnetic device according to claim 8, characterized in that: The ratio of the width of the comb tooth skeleton (3) to the circumference of one turn of the coil (2) is greater than 0.5% and less than 10%.

10. The magnetic device according to any one of claims 1 to 5, characterized in that: The number of turns of the coil (2) is N, and the comb tooth skeleton (3) comprises N-1 teeth (32), and the N-1 teeth (32) respectively extend between each two adjacent turns of the coil (2) in the N turns of the coil (2), so as to form an air duct (20) between each two adjacent turns of the coil (2) in the N turns of the coil (2).

11. The magnetic device according to any one of claims 1 to 5, characterized in that: A surface of the ridge plate (31) on which the teeth (32) are fixed contacts the outer side of the multi-turn coil (2), and a portion of the multi-turn coil (2) in contact with the ridge plate (31) is arc-shaped; The side of the ridge plate (31) on which the teeth (32) are fixed is an arc surface and a concave surface.

12. The magnetic device according to any one of claims 1 to 5, characterized in that: The magnetic device also includes an isolation frame (4); The isolation frame (4) is located between the magnetic core (1) and the multi-turn coil (2), so that there is a gap between the magnetic core (1) and the multi-turn coil (2).

13. The magnetic device according to any one of claims 1 to 3 or 5, characterized in that: The ridge plate (31) is located between the magnetic core (1) and the multi-turn coil (2), so that a space exists between the magnetic core (1) and the multi-turn coil (2).

14. An electronic device, characterized in that: The electronic device comprises a magnetic device (100) and a fan (200), wherein the magnetic device (100) is a magnetic device according to any one of claims 1 to 13; The wind blown by the fan (200) flows through the wind duct (20) of the magnetic device (100) to dissipate heat from the magnetic device (100).

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