Framework and transformer

Abstract

The embodiment of the invention particularly relates to a framework and a transformer, and belongs to the technical field of transformers. The embodiment of the invention aims to solve the technical problem that a framework in the prior art is relatively large in size and is not beneficial to miniaturization of a transformer. The framework comprises a winding reel and at least one pin connecting part, the at least one pin connecting part is arranged on the end face of the winding reel, the pin connecting part is provided with a plurality of connecting through holes and a first wire passing groove, and a pin is inserted into each connecting through hole; each first wire passing groove is located between every two adjacent connecting through holes, the first wire passing grooves penetrate through the pin connecting parts in the direction of the center line of the winding reel, and partial areas of the groove walls of the first wire passing grooves are located in at least one connecting through hole adjacent to the first wire passing grooves so that the pins can be exposed. According to the framework, the distance between the adjacent pins can be reduced, so that the size of the framework is reduced, and miniaturization of the transformer is facilitated.

Description

Technical Field

[0001] The embodiments of the present application belong to the technical field of magnetic components, and in particular, relate to a skeleton and a transformer. Background Art

[0002] With the development of electronic technology, low-power transformers are widely used in the fields of new energy vehicles, etc. The transformer usually includes a frame and a coil winding wound on the frame.

[0003] In the related art, the skeleton generally includes a winding drum and a pin connection part. The winding drum is used to wind the coil winding. The pin connection part is connected to the edge of one end of the winding drum, and the pin connection part is provided with a plurality of spaced connection through holes, each of which is plugged with a pin, and a wire groove is provided between two adjacent connection through holes for the lead wire of the coil winding to pass through and connect with the pin in the connection through hole.

[0004] However, the skeleton in the related art is relatively large in size, which is not conducive to the miniaturization of the transformer. Summary of the invention

[0005] In view of this, the embodiments of the present application provide a frame and a transformer to solve the technical problem that the frame is large in size and is not conducive to miniaturization of the transformer.

[0006] A first aspect of an embodiment of the present application provides a skeleton, comprising a winding drum and at least one pin connection portion, wherein the winding drum is used to wind a coil winding; at least one of the pin connection portions is arranged on an end surface of the winding drum, and the pin connection portion is provided with a plurality of connecting through holes and at least one first wire groove, wherein the plurality of connecting through holes are arranged at intervals in a direction parallel to the end surface of the winding drum, and a pin is inserted into each of the connecting through holes;

[0007] Among them, the first wire passing groove is located between two adjacent connecting through holes, the first wire passing groove passes through the pin connecting part along the direction of the center line of the winding drum, and a partial area of ​​the groove wall of the first wire passing groove is located in at least one of the connecting through holes adjacent thereto to expose the pin.

[0008] The skeleton of the embodiment of the present application is a coil winding wound on a bobbin, and its lead wire is passed through the first wire groove to connect with the pin inserted in the connecting through hole. Since a part of the groove wall of the first wire groove is located in at least one connecting through hole adjacent to it to expose the pin, it is equivalent to removing the part of the pin connection part located between the wire groove and the connecting through hole in the related art, thereby increasing the width of the first wire groove in the direction perpendicular to the center line of the bobbin. Compared with the related art in which the wire groove and the connecting through hole are arranged at intervals, while meeting the same wire groove width requirements, the skeleton of the embodiment of the present application can reduce the distance between adjacent pins, thereby reducing the volume of the skeleton, which is conducive to the miniaturization of the transformer.

[0009] In some implementations that may include the above-mentioned embodiments, the first wire groove is provided on one side of at least one of the pins; and / or the first wire groove is provided on both sides of at least one of the pins.

[0010] In some implementations that may include the above-mentioned embodiments, the pin connecting portion is also provided with a second wire passing groove, the second wire passing groove is located between two adjacent connecting through holes that are not provided with the first wire passing groove, and the second wire passing groove passes through the pin connecting portion along the direction of the center line of the winding drum.

[0011] In some implementations that may include the above-mentioned embodiments, the first wire passing groove or the second wire passing groove is used for two lead wires of the coil winding to pass through; a partition is provided in the first wire passing groove or the second wire passing groove, and the partition separates the two lead wires.

[0012] In some implementations that may include the above embodiments, the first wire passing groove or the second wire passing groove includes a first sub-groove and a second sub-groove connected to each other, the first sub-groove is located between two adjacent pins; the second sub-groove is located on the side of the first sub-groove facing the winding drum.

[0013] In some implementations that may include the above embodiments, the partition includes a first partition and / or a second partition, the first partition is located in the first sub-groove, and the second partition is located in the second sub-groove.

[0014] In some implementations that may include the above embodiments, along the connection direction of two of the pins adjacent to the first partition, the width of the first partition is greater than or equal to 0.05 mm and less than or equal to 3 mm; or, along the direction perpendicular to the center line of the winding drum, the height of the first partition is greater than or equal to 0.05 mm and less than or equal to 5 mm.

[0015] In some implementations that may include the above embodiment, along a direction from the pin connection portion to the bobbin, a bottom of the second sub-groove is inclined toward a center line of the bobbin.

[0016] In some implementations that may include the above embodiment, the second partition is a triangular plate, and one side of the triangular plate is connected to the bottom of the second sub-groove.

[0017] In some implementations that may include the above embodiments, the triangular plate faces away from the bottom of the second sub-slot, and a protrusion is provided on the side facing the notch of the second sub-slot, and the side of the protrusion facing away from the triangular plate is flush with the surface of the pin connecting portion.

[0018] In some implementations that may include the above-mentioned embodiments, along a direction from the pin connection portion to the bobbin, two side groove walls of the second sub-groove are inclined in directions away from each other.

[0019] In some implementations that may include the above-mentioned embodiments, the pin extends out of the connecting through hole at one end close to the winding drum and is bent in a direction away from the winding drum to form a first bent portion, and the first bent portion is used to connect the lead of the coil winding; the pin extends out of the connecting through hole at one end away from the winding drum and is bent in a direction away from the winding drum to form a second bent portion, and the second bent portion is used for welding to a circuit board.

[0020] In some implementations that may include the above embodiments, a accommodating cavity is provided on the side of the pin connecting portion facing away from the first wire passing groove, the accommodating cavity is communicated with the connecting through hole, and the accommodating cavity is used to accommodate part of the first bent portion of the pin.

[0021] A second aspect of an embodiment of the present application provides a transformer, comprising a core assembly, a coil winding, a protective member and a skeleton as described in any one of the above items; the core assembly comprises two opposing cores; at least a portion of a bobbin of the skeleton is disposed in the core assembly; the coil winding is disposed on the bobbin, and the coil winding is electrically connected to the pins of a pin connection portion in the skeleton; the protective member comprises a suction member portion and an isolation member portion, and the suction member portion is at least partially disposed above the skeleton; the isolation member is connected to the suction member portion, the isolation member covers at least a portion of the bobbin, and covers at least a portion of the pin connection portion, and the isolation member is used to isolate the pins of the pin connection portion.

[0022] Since the transformer of the embodiment of the present application includes the frame as described in any one of the above items, the transformer also has the advantages of the frame as described in any one of the above items, which will not be repeated here.

[0023] In some implementations that may include the above-mentioned embodiments, the protective member also includes a connecting portion, which is arranged in the magnetic core assembly, the connecting portion is located between the suction portion and the isolation portion, and both ends of the connecting portion are connected to the suction portion and the isolation portion.

[0024] In some implementations that may include the above embodiments, the connecting portion at least partially covers the skeleton.

[0025] In some implementations that may include the above-mentioned embodiments, the connecting portion includes two oppositely disposed first side plates, the first side plates are connected to the suction member portion, and the first side plates are disposed between the skeleton and the magnetic core assembly.

[0026] In some implementations that may include the above-mentioned embodiments, the first side plate is provided with a through hole, and the magnetic core component is partially passed through the through hole.

[0027] In some implementations that may include the above embodiments, openings are provided on both sides of the isolation portion along a centerline direction of the coil winding, and the pins at least partially pass under the openings.

[0028] In some implementations that may include the above-mentioned embodiments, the isolation portion includes a connecting plate and two baffles, the connecting plate being connected to the connecting portion; the two baffles are respectively arranged on both sides of the connecting plate along a direction perpendicular to the center line of the coil winding, and the connecting plate and the two baffles are used to partially accommodate the pin connecting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the first-view structure of the skeleton of an embodiment of the present application;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure when the skeleton is connected to the lead wire;

[0032] Figure 3 for Figure 1 A schematic diagram of the structure of the skeleton from a second perspective;

[0033] Figure 4 for Figure 3 A schematic diagram of the top view of the skeleton in FIG.

[0034] Figure 5 for Figure 3 A schematic diagram of the front view structure of the skeleton in FIG.

[0035] Figure 6 It is a schematic diagram of the partial structure of the pin connection part in some possible implementation methods of the embodiments of the present application;

[0036] Figure 7 It is a partial structural schematic diagram of the pin connection part in some other possible implementations of the embodiments of the present application;

[0037] Figure 8 It is a schematic diagram of the structure of the skeleton in some other possible implementation methods of the embodiment of the present application;

[0038] Fig. 9 A schematic diagram of the structure of a transformer according to an embodiment of the present application;

[0039] Fig.10 for Fig. 9 Schematic diagram of the exploded structure of the transformer in FIG.

[0040] Fig.11 sectional views of transformers in other possible implementations of the embodiments of the present application;

[0041] Fig.12 for Fig. 9 Schematic diagram of the exploded structure of the middle magnetic core assembly;

[0042] Fig.13 for Fig. 9 A schematic diagram of the structure of the middle magnetic core assembly;

[0043] Fig.14 for Fig. 9 A schematic diagram of the structure of the middle protective member from a third perspective;

[0044] Fig.15 Schematic diagram of the structure of the protective element from a fourth viewing angle in some other possible implementations of the embodiments of the present application;

[0045] Fig.16 for Fig.15 A schematic diagram of the structure of the middle protective member from a fifth viewing angle;

[0046] Fig.17 for Fig. 9 The structural intent of the meso-frame;

[0047] Fig.18 for Fig.17 Perspective view of the skeleton.

[0048] Description of reference numerals:

[0049] 10- Skeleton;

[0050] 110- bobbin; 111- limiting portion;

[0051] 112-positioning groove; 120-pin connecting portion;

[0052] 121-connection through hole; 122-first wire groove;

[0053] 123-first hole wall; 124-second hole wall;

[0054] 125-first sub-slot; 126-second sub-slot;

[0055] 127-second wire slot; 130-pin;

[0056] 131 - connecting terminal; 132 - second bending portion;

[0057] 140-accommodation cavity; 150-partitioning portion;

[0058] 151-first partition; 152-second partition;

[0059] 153- protrusion;

[0060] 20-coil winding;

[0061] 210-lead;

[0062] 30-magnetic core assembly;

[0063] 310-middle column; 320-body;

[0064] 330-accommodation chamber;

[0065] 40-protective parts;

[0066] 410- suction part; 411- positioning protrusion;

[0067] 412-second identification portion; 420-isolation portion;

[0068] 421- opening; 422- connecting plate;

[0069] 423- baffle; 424- isolation slot;

[0070] 425-first identification portion; 430-connection portion;

[0071] 431-first side plate; 432-through hole;

[0072] 433-Second side panel. DETAILED DESCRIPTION

[0073] As described in the background technology, the skeleton in the related art has a technical problem of being large in size. The inventor has found through research that the reason is that the skeleton in the related art usually includes a winding drum and a pin connection part. The winding drum is used to wind the coil winding. The pin connection part is connected to the edge of one end of the winding drum, and the pin connection part is provided with a plurality of connecting through holes, and the plurality of connecting through holes are arranged at intervals in the direction parallel to the end face of the winding drum. A pin is inserted into each connecting through hole, and a wire groove is provided between two adjacent connecting through holes, and the wire groove is for the lead wire of the coil winding to pass through and connect with the pin. However, in the skeleton in the related art, the wire groove and the two adjacent connecting through holes are arranged at intervals, so that the distance between the two pins is wide, which makes the volume of the skeleton larger, which is not conducive to the miniaturization of the transformer.

[0074] In the related art, the inventor has tried to reduce the distance between two adjacent pins to reduce the volume of the skeleton, so as to meet the requirements of transformer miniaturization, but the technical difficulty is relatively large. Specifically, the spacing between two adjacent pins in the skeleton is the sum of the width of the wire slot and the width between the hole wall of the two connecting through holes and the slot wall of the wire slot. First, since the wire slot is used for the lead wires of the coil winding, the slot width of the wire slot is limited by the wire diameter of the lead wire and cannot be reduced. Secondly, the hole wall of the connecting through hole needs to fit the circumferential side of the pin so that the pin connection part can wrap the pin, that is, the width between the hole wall of the connecting through hole and the slot wall of the wire slot needs to be greater than zero, so that there is sufficient connection strength between the pin and the pin connection part, so as to avoid the lead wire connected to the pin from applying tension to the pin during the winding process and causing the pin to shake. Therefore, transformer miniaturization has become a technical problem that technicians in this field have always wanted to solve but have never succeeded.

[0075] In view of this, the skeleton of the embodiment of the present application is provided with a first wire passing groove between adjacent connecting through holes, and a partial area of ​​the groove wall of the first wire passing groove is located in at least one connecting through hole adjacent to it to expose the pins, so that while ensuring that the first wire passing groove meets the width requirement, the distance between two adjacent pins is reduced, thereby further reducing the volume of the skeleton, which is conducive to the miniaturization of the transformer.

[0076] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0077] refer to Figure 1 , Figure 2 and Figure 3The embodiment of the present application provides a skeleton 10, including a bobbin 110 and at least one pin connection portion 120, the bobbin 110 is used to wind the coil winding 20. The at least one pin connection portion 120 is arranged on the end surface of the bobbin 110. The pin connection portion 120 is provided with a plurality of connecting through holes 121 and at least one first wire groove 122, and the plurality of connecting through holes 121 are arranged in a direction parallel to the end surface of the bobbin 110, for example Figure 1 The first through-hole 121 is arranged in a direction x as shown in the figure, and a pin 130 is inserted in each connecting through-hole 121. The first through-hole 122 is located between two adjacent connecting through-holes 121, and the first through-hole 122 passes through the pin connecting portion 120 along the center line of the winding drum 110. A part of the groove wall of the first through-hole 122 is located in at least one adjacent connecting through-hole 121 to expose the pin 130.

[0078] In the embodiment of the present application, the coil winding 20 wound on the bobbin 110 has its lead wire 210 inserted into the first wire slot 122 to connect with the pin 130 inserted into the connecting through hole 121. Since a part of the slot wall of the first wire slot 122 is located in at least one of the adjacent connecting through holes 121 to expose the pin 130, it is equivalent to removing the part of the pin connection part located between the wire slot and the connecting through hole in the related art, and adding the first wire slot 122 along the direction perpendicular to the center line of the bobbin 110, for example, along Figure 1 The slot width in the direction x shown in . Compared with the spacing between the wire slot and the connecting through hole in the related art, while meeting the same slot width requirement of the wire slot, the skeleton 10 of the embodiment of the present application can reduce the distance between adjacent pins, thereby reducing the volume of the skeleton, which is beneficial to the miniaturization of the transformer. For example, in the related art, the original distance between the two pins can be 1.8mm, the width between the hole wall of the connecting through hole and the slot wall of the wire slot can be 2×0.6mm, and the width between the hole wall of the connecting through hole and the slot wall of the wire slot accounts for 66% of the spacing between the two pins. After removing the part of the pin connection portion located between the wire slot and the connecting through hole, the spacing between the two pins can be 0.6mm, which is reduced by 66%.

[0079] In addition, without changing the distance between adjacent pins 130, the skeleton 10 of the embodiment of the present application can increase the width of the first wire passing groove 122, thereby increasing the wire passing space for the lead wires of the coil winding 20, reducing or eliminating the restrictions of the skeleton 10 on the winding method of the coil winding 20, and improving the scope of application of the skeleton 10, which is conducive to the universalization of the skeleton 10.

[0080] In addition, a portion of the groove wall of the first wire groove 122 is located in at least one adjacent connecting through hole 121 to expose the pin 130, that is, the portion of the pin connecting portion 120 located between the first wire groove 122 and the connecting through hole 121 is removed, and sufficient connection strength between the pin connecting portion 120 and the pin 130 can still be ensured. Specifically, refer to Figure 2 First, since a partial area A of the pin 130 inserted in the connecting through hole 121 is exposed by the first wire groove 122, but not the entire area is exposed by the first wire groove 122, the area of ​​the pin 130 inserted in the connecting through hole 121 and not exposed by the first wire groove 122 is still wrapped by the pin connecting portion 120, so that the pin connecting portion 120 and the pin 130 have sufficient connection strength.

[0081] Secondly, since the pin connection portion 120 is connected to the end surface of the winding drum 110, and the first wire groove 122 is along the center line of the winding drum 110, for example Figure 2 The direction y shown runs through the pin connection part 120, so that the lead 210 of the coil winding 20 is routed, for example, along the direction y, and the lead 210 applies a torque F to the pin 130. The first hole wall 123 and the second hole wall 124 adjacent to the hole wall to be removed in the connecting through hole 121 are the main force-bearing surfaces, and the first hole wall 123 and the second hole wall 124 apply a torque G to the pin 130, and the direction of the torque G is opposite to the direction of the torque F to balance the torque F. However, the other hole walls in the connecting through hole 121 except the first hole wall 123 and the second hole wall 124 are not the main force-bearing surfaces. After the non-main force-bearing surfaces are removed, there is still sufficient connection strength between the pin connection part 120 and the pin 130. Therefore, the portion of the pin connection part 120 located between the first wire groove 122 and the connecting through hole 121 is removed, and there is still sufficient connection strength between the pin connection part 120 and the pin 130.

[0082] Exemplarily, the bobbin 110 may be a cylindrical structure or a square cylindrical structure, etc. A magnetic core assembly may also be provided inside the bobbin 110 to enhance the magnetic field strength of the transformer. Exemplarily, a limiting portion 111 may also be provided on the end surface of the bobbin 110, and the limiting portion 111 is used to limit the coil winding 20 to prevent the coil winding 20 from detaching from the bobbin 110, thereby improving the reliability of the transformer.

[0083] At least one pin connection portion 120 is provided on the end surface of the winding drum 110. The pin connection portion 120 and the winding drum 110 may be an integral structure to enhance the connection strength between the pin connection portion 120 and the winding drum 110. For example, the pin connection portion 120 and the winding drum 110 may be integrally formed by injection molding or the like.

[0084] For example, the number of the pin connection portion 120 can be one, and one pin connection portion 120 can be connected to any end surface of the winding drum 110. For example, referring to Figure 1 , the number of the pin connection parts 120 can also be two, and the two pin connection parts 120 can be respectively arranged on the two opposite end surfaces of the winding drum 110. Exemplarily, the number of the pin connection parts 120 can also be multiple, and the multiple pin connection parts 120 are respectively arranged on the two opposite end surfaces of the winding drum 110. It can be understood that the number of the pin connection parts 120 can also be specifically set according to the number of the pins 130 and the leads 210 in the coil winding 20, and the embodiments of the present application will not be repeated in detail.

[0085] refer to Figures 1 to 3 The pin connection portion 120 may be provided with a plurality of connection through holes 121 for inserting the pins 130. The plurality of connection through holes 121 are arranged at intervals in a direction parallel to the end surface of the winding drum 110, so that the plurality of pins 130 inserted in the connection through holes 121 are arranged at intervals in a direction parallel to the end surface of the winding drum 110.

[0086] In some possible implementations of the present application, such as Fig.17 and Fig.18 As shown, the skeleton may further include a connection terminal 131. The connection terminal 131 is electrically connected to the pin 130. For example, some of the connection terminals 131 may not be electrically connected to the corresponding pin 130. The connection terminal 131 may be electrically connected to the lead 210 of the coil winding 20. The pin 130 is electrically connected to the coil winding 20 through the connection terminal 131, and the connection terminal 131 serves as the lead-out end of the coil winding 20 to lead out the lead 210 of the coil winding 20. In some possible implementations of the embodiments of the present application, the pin 130 may be electrically connected to a PCB, and the PCB is used to place other components.

[0087] Exemplarily, the connection terminal 131 and the pin 130 can be designed separately. If the connection terminal 131 and the pin 130 are not designed separately, when the entire transformer is in a high vibration environment, the pin 130 will vibrate with the vibration of the PCB connected to it, and the pin 130 will transmit the vibration to the wire management welding side, resulting in a broken wire. In the embodiment of the present application, the connection terminal 131 and the pin 130 are designed separately, so the vibration on the pin 130 will not directly affect the connection terminal 131, avoiding the situation of broken wires, and ensuring the high vibration resistance of the transformer.

[0088] It is understandable that if Fig.17 and Fig.18As shown, the middle portion of the pin 130 can be embedded in the pin connection portion 120, which is equivalent to hiding the middle portion in the pin connection portion 120, so as to avoid the connection terminal 131 and the pin 130 from affecting each other. In this way, the connection terminal 131 and the pin 130 located outside the pin connection portion 120 are separated from each other, but the two are connected to each other inside the pin connection portion 120.

[0089] It is understandable that the pin 130 can be at least one of an L-shape, an inverted L-shape, a C-shape, a separated seagull-foot structure, and a gull-wing structure.

[0090] In some possible implementations of the embodiments of the present application, the pin connecting portion 120 may have multiple sides, and the connecting terminal 131 and the pin 130 may be arranged on different sides of the pin connecting portion 120, so that the lead welding point and the PCB welding point are in different areas, further ensuring the separation effect between the connecting terminal 131 and the pin 130.

[0091] refer to Figures 1 to 3 , one end of the pin 130 close to the winding drum 110 can extend out of the connecting through hole 121, and bend in the direction away from the winding drum 110 to form a first bending portion, and the first bending portion can form a connecting terminal 131, that is, the connecting terminal 131 and the pin 130 can be an integral structure. The first bending portion can be used to connect the lead 210 of the coil winding 20, for example, the lead 210 of the coil winding 20 can be sleeved on the first bending portion, thereby improving the convenience of connecting the pin 130 with the lead 210. One end of the pin 130 away from the winding drum can extend out of the connecting through hole 121, and bend in the direction away from the winding drum 110 to form a second bending portion 132, and the second bending portion 132 can be used for welding with a circuit board. Since the circuit board is welded with the second bending portion 132, the second bending portion 132 is subjected to stress. The lead 210 of the coil winding 20 is connected to the first bending portion that is not directly welded to the circuit board, so the vibration on the second bending portion 132 will not directly affect the first bending portion, avoiding wire breakage and improving the vibration resistance when the pin 130 is connected to the lead 210 of the coil winding 20.

[0092] For example, reference Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8The side of the pin connection part 120 facing away from the first wire groove 122 may be provided with a receiving cavity 140, which is connected to the connecting through hole 121 and is used to receive part of the first bending portion of the pin 130. The receiving cavity 140 contacts part of the first bending portion, thereby increasing the contact area between the pin connection part 120 and the pin 130, and further improving the connection strength between the pin connection part 120 and the pin 130.

[0093] The pin connection portion 120 may also be provided with at least one first wire groove 122, the first wire groove 122 being located between two adjacent connection through holes 121, the first wire groove 122 passing through the pin connection portion 120 along the direction of the center line of the winding drum 110, and a portion of the groove wall of the first wire groove 122 being located in at least one adjacent connection through hole 121 to expose the pin 130. The lead wire 210 of the coil winding 20 is passed through the first wire groove 122.

[0094] For example, a portion of the groove wall of the first wire groove 122 may be located in a connecting through hole 121 adjacent thereto, that is, a portion of the pin connection portion 120 located between the wire groove and a connecting through hole adjacent to the wire groove is removed. Figures 1 to 5 , part of the groove wall of the first wire groove 122 may also be located within two adjacent connecting through holes 121 , that is, the part of the pin connecting portion 120 located between the wire groove and the two adjacent connecting through holes is removed to further increase the groove width of the first wire groove 122 .

[0095] The number of the first wire passing grooves 122 may be one, two, or more. The embodiment of the present application does not specifically limit the number of the first wire passing grooves 122.

[0096] A first wire groove 122 may be provided on one side of at least one pin 130. Exemplarily, a first wire groove 122 may be provided on one side of a pin 130, that is, the portion of the pin connection portion located between a pin and an adjacent wire groove in the related art may be cut off. Exemplarily, a first wire groove 122 may also be provided on one side of some of the pins 130, that is, the portion of the pin connection portion located between some of the pins and an adjacent wire groove in the related art may also be cut off. Exemplarily, a first wire groove 122 may also be provided on one side of all the pins 130, that is, the portion of the pin connection portion located between all the pins and an adjacent wire groove in the related art may also be cut off.

[0097] In some possible implementations of the present application, at least one pin 130 may be provided with a first wire groove 122 on both sides. For example, a first wire groove 122 may be provided on both sides of a pin 130, that is, the pin connection portion located between a pin 130 and two adjacent wire grooves in the related art may be cut off. For example, referring to Figure 8 , the first wire groove 122 may also be provided on both sides of the partial pins 130, that is, the portion of the pin connection portion located between the partial pins 130 and the two adjacent wire grooves may be cut off. Figure 6 , the first wire-passing grooves 122 may also be provided on both sides of all the pins 130 , that is, the pin connection portions in the related art located between all the pins 130 and the two adjacent wire-passing grooves may be cut off.

[0098] refer to Figures 1 to 5 The pin connection portion 120 may also be provided with a second wire groove 127, the second wire groove 127 is located between two adjacent connecting through holes 121 that are not provided with the first wire groove 122, and the second wire groove 127 is along the direction of the center line of the winding drum 110, for example Figure 1 The direction y shown in FIG. 1 penetrates the pin connection portion 120 .

[0099] refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The first wire slot 122 or the second wire slot 127 can be used for two lead wires 210 of the coil winding 20 to pass through. A separator 150 is provided in the first wire slot 122 or the second wire slot 127. The separator 150 separates the two lead wires 210 to prevent the two lead wires 210 from contacting each other and causing a short circuit, thereby improving the reliability of the transformer. For example, referring to Figures 1 to 6 , a partition 150 may be provided in the first wire-passing groove 122. Figure 7 A partition 150 may also be provided in the second wire groove 127. Figure 8 A partition 150 may be provided in both the first wire passing groove 122 and the second wire passing groove 127 .

[0100] refer to Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 and Figure 8The first wire-passing slot 122 or the second wire-passing slot 127 may include a first sub-slot 125 and a second sub-slot 126 connected to each other, wherein the first sub-slot 125 is located between two adjacent pins 130. The second sub-slot 126 is located on the side of the first sub-slot 125 facing the bobbin 110. The lead wire 210 of the coil winding 20 passes through the second sub-slot 126 and the first sub-slot 125 in sequence and then is connected to the pin 130.

[0101] The partition 150 may include a first partition 151 and / or a second partition 152. The first partition 151 may be located in the first sub-groove 125, and the second partition 152 may be located in the second sub-groove 126. Figures 1 to 7 The partition 150 may include a first partition 151, and the first partition 151 may be located in the first sub-groove 125. The lead wires 210 located in the first sub-groove 125 may be separated by the first partition 151 to prevent the lead wires 210 from contacting each other and causing a short circuit.

[0102] For example, reference Figure 4 , along the connection direction of two pins 130 adjacent to the first partition 151, for example Figure 4 In the direction x shown, the width of the first partition 151 can be greater than or equal to 0.05 mm and less than or equal to 3 mm. For example, the width of the first partition 151 can be 0.05 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm. The first partition 151 within this width range can separate the lead 210 and has a sufficiently small width to avoid excessively increasing the distance between the two pins 130, thereby ensuring that the skeleton 10 has a smaller volume, thereby ensuring the miniaturization of the transformer.

[0103] refer to Figure 5 , along the direction perpendicular to the center line of the winding drum 110, for example Figure 5 In the direction z shown in , the height of the first partition 151 can be greater than or equal to 0.05 mm and less than or equal to 5 mm. For example, the height of the first partition 151 can be 0.05 mm, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm. The first partition 151 located within this height range can separate the lead 210 and has a sufficiently small height to avoid excessively increasing the distance between the two pins 130, thereby ensuring that the skeleton 10 has a smaller volume, thereby ensuring the miniaturization of the transformer.

[0104] For example, reference Figure 8, the partition 150 may further include a second partition 152, and the second partition 152 may be located in the second sub-slot 126. Since the second sub-slot 126 is located on the side of the first sub-slot 125 facing the bobbin 110, that is, the second sub-slot 126 is not disposed between the two pins 130. The second partition 152 is disposed in the second sub-slot 126, so that the lead 210 can be separated and the distance between the two pins 130 can be avoided from being increased, thereby avoiding increasing the volume of the frame 10, which is conducive to miniaturization of the transformer.

[0105] refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 , along the direction from the pin connection portion 120 to the winding drum 110, for example Figure 1 In the direction y shown in FIG. 1 , the bottom of the second sub-slot 126 is inclined toward the center line of the bobbin 110 . This configuration enables the lead wire 210 to smoothly extend from the coil winding 20 to the first sub-slot 125 , thereby improving the convenience of routing the lead wire 210 .

[0106] For example, reference Figure 8 The second partition 152 located in the second sub-slot 126 can be a triangular plate, and one side of the triangular plate is connected to the bottom of the second sub-slot 126. The triangular plate can be accommodated in the second sub-slot 126, has a sufficiently large area, and does not extend from the second sub-slot 126. The function of the second partition 152 to separate the lead wires 210 is fully guaranteed without increasing the volume of the frame 10, which is beneficial to the reliability and miniaturization of the transformer.

[0107] Exemplarily, the triangular plate faces away from the bottom of the second sub-slot 126, and a protrusion 153 is provided on the side facing the notch of the second sub-slot 126, and the side of the protrusion 153 facing away from the triangular plate is flush with the surface of the pin connection portion 120. This arrangement further increases the area of ​​the second partition 152, and prevents the second partition 152 from protruding from the second sub-slot 126, which is further beneficial to the reliability and miniaturization of the transformer.

[0108] refer to Figure 8 , along the direction from the pin connection portion 120 to the winding drum 110, and as Figure 8 In the direction y shown, the two side walls of the second sub-slot 126 are inclined away from each other to increase the space inside the second sub-slot 126 without increasing the distance between the two pins 130, thereby increasing the space for the lead 210 to pass through.

[0109] The present application also provides a transformer. Fig. 9 and Fig.10 The transformer includes a core assembly 30, a coil winding 20, a protective member 40, and a skeleton 10 as described above. The core assembly 30 includes two opposing magnetic cores. At least a portion of the bobbin 110 of the skeleton 10 is disposed in the core assembly 30. The coil winding 20 is disposed on the bobbin 110, and the coil winding 20 is electrically connected to the pin 130 of the pin connection portion 120 in the skeleton 10. For example, the coil winding 20 has a lead 210, and the lead 210 is electrically connected to the pin 130. The protective member 40 includes a suction member portion 410 and an isolation portion 420, and the suction member portion 410 is at least partially disposed above the skeleton 10. The isolation portion 420 is connected to the suction member portion 410, and the isolation portion 420 covers at least a portion of the bobbin 110 and at least a portion of the pin connection portion 120, and the isolation portion 420 is used to isolate the pin 130 of the pin connection portion 120.

[0110] The transformer of the embodiment of the present application is arranged in the magnetic core assembly 30 through the skeleton 10 and part of the protective member 40. The skeleton 10 is used for winding the coil winding 20 and plays a role in supporting the coil winding 20. The suction part 410 of the protective member 40 is at least partially arranged above the skeleton 10. While the suction part 410 plays the role of protecting the top of the skeleton 10, the suction part 410 can also be used for the adsorption of other adsorption equipment to complete the processes of lifting and displacement. It is electrically connected to the coil winding 20 through the pin 130 to achieve current output. The pin connection part 120 is at least partially arranged in the isolation part 420 of the protective member 40. The isolation part 420 is used to isolate the pin connection part 120. The isolation part 420 serves as an isolation area between the magnetic core and the pin connection part 120. It can meet the safety distance and voltage resistance requirements between the pin connection part 120 and the magnetic core assembly 30 within the minimum size range, and has the advantages of high voltage resistance requirements and large safety distance.

[0111] In one embodiment, Fig. 9 and Fig.10 As shown, the top end face of the magnetic core assembly 30 along its height direction is a flush structure. The suction piece in the related art is usually a cover plate, and the cover plate is usually fixed to the magnetic core assembly 30 by a clamping structure. Specifically, a clamping block is provided on the cover plate, and a notch is provided on the top surface of the magnetic core assembly 30 corresponding to the clamping block, and the clamping block is clamped in the notch to form a clamping structure. Since the coil winding 20 is wrapped around the magnetic core in a whole circle, the notch can only be opened in the area with the least electrical impact, which makes the processing difficult. At the same time, the setting of the notch may cause stress concentration problems in the magnetic core assembly 30, reduce the structural strength, and easily cause the risk of cracking. The top end face of the magnetic core assembly 30 provided in this embodiment along its height direction is a flush structure, that is, no notch is provided on the top end face of the magnetic core assembly 30 along its height direction, thereby avoiding stress concentration and improving the reliability of the magnetic core assembly 30.

[0112] It is understandable that if Fig. 9and Fig.10 As shown, the suction part 410 provided in the embodiment of the present application is connected to the suction part 410 through the connecting part 430 to achieve the fixation of the suction part 410, ensure the fixation effect between the suction part 410 and the magnetic core component 30, and the suction part 410 is embedded in the magnetic core component 30 to ensure that the suction part 410 will not fall off. At the same time, the suction part 410 and the magnetic core component 30 do not need to be snapped together, so there is no need to open a gap on the magnetic core component 30, which reduces the difficulty of processing and reduces the production cost.

[0113] Specifically, Fig.11 , Fig.12 and Fig.13 As shown, in the embodiment of the present application, the magnetic core assembly 30 is an EE structure. Each magnetic core includes a body 320 and a middle column 310. The body 320 is similar to a U-shaped structure, so that two relatively arranged magnetic cores are closed to form a rectangular parallelepiped structure. A middle column 310 is arranged on the inner side of the body 320, and the middle columns 310 of the two magnetic cores are arranged opposite to each other. The size of the middle column 310 is smaller than the size of the body 320, so that a accommodating cavity 330 is formed between the body 320 and the middle column 310, and the accommodating cavity 330 is used to accommodate at least part of the skeleton 10 and part of the protective member 40. Along the center line direction of the winding drum 110, the two relatively arranged magnetic cores are respectively inserted into the winding drum 110 of the skeleton 10. Among them, the suction part 410 can be at least partially arranged in the upper part of the accommodating cavity 330, which is equivalent to the suction part 410 being at least partially embedded in the interior of the magnetic core assembly 30, ensuring the fixing effect of the magnetic core assembly 30 on the suction part 410. Of course, according to actual needs, the magnetic core component 30 can also be an EI structure, or any other magnetic core structure, and the present invention is not limited thereto. It is understandable that the structure of the protective member 40 will also adapt to the corresponding changes in the structure of the magnetic core component 30.

[0114] It is understandable that the top surface of the suction part 410 can be flush with the top end surface of the magnetic core component 30, or the top surface of the suction part 410 can protrude relative to the top end surface of the magnetic core component 30. The embodiment of the present application does not limit the relative position between the top surface of the suction part 410 and the top end surface of the magnetic core component 30, and can be adjusted according to actual production needs. As long as other adsorption equipment can be used to adsorb the suction part 410, it is within the protection scope of the embodiment of the present application.

[0115] In some possible implementations of the present application, such as Fig.15 As shown, the protective member 40 may further include a connecting portion 430 , which is disposed in the magnetic core assembly 30 , between the suction member portion 410 and the isolation portion 420 , and whose two ends are connected to the suction member portion 410 and the isolation portion 420 .

[0116] The connection part 430 is located between the suction part 410 and the isolation part 420 , and serves as an intermediate connection between the suction part 410 and the isolation part 420 , so that the suction part 410 , the connection part 430 and the isolation part 420 are connected into an integral structure.

[0117] It is understandable that in the related art, the wire of the coil winding is on the outside and close to the magnetic core, and any damage or aging of the wire is prone to poor voltage resistance. However, in the embodiment of the present application, the connecting portion 430 can be wrapped around the outside of the entire coil winding 20, and the connecting portion 430 serves as a protective area for the coil winding 20 to prevent the magnetic core assembly 30 from scratching the coil winding 20 during assembly. Moreover, since the connecting portion 430 is equivalent to a cover arranged on the outside of the coil winding 20, it can also prevent the glue bonding between the protective member 40 and the magnetic core assembly 30 from adhering to the coil winding 20, further playing a role in protecting the coil winding 20.

[0118] In some possible implementations of the present application, such as Fig.14 As shown, the connecting portion 430 includes two first side plates 431 that are oppositely disposed. The first side plates 431 are connected to the suction member portion 410 , and the first side plates 431 are disposed between the skeleton 10 and the magnetic core assembly 30 .

[0119] The first side plate 431 is vertically arranged relative to the isolation part 420, the bottom of the first side plate 431 is connected to the isolation part 420, and the top of the first side plate 431 is connected to the suction part 410 to provide a good support effect for the suction part 410. The first side plate 431 is arranged between the skeleton 10 and the magnetic core assembly 30, and the first side plate 431 plays a role of isolating the coil winding 20 from the magnetic core assembly 30, thereby ensuring the safety distance and withstand voltage requirements of the coil winding 20 to a certain extent.

[0120] In some possible implementations of the present application, the first side plate 431 may be provided with a through hole 432, and the magnetic core assembly 30 is partially inserted through the through hole 432. By providing the through hole 432 on the first side plate 431, the through hole 432 provides an escape space for the magnetic core assembly 30, so that the middle column 310 of the magnetic core assembly 30 can pass through the through hole 432 and extend into the skeleton 10, so as to provide electromagnetic effect between the coil winding 20 and the magnetic core assembly 30.

[0121] In some possible implementations of the present application, such as Fig.15 As shown, the connecting portion 430 further includes two oppositely disposed second side plates 433 , the second side plates 433 are connected to the suction portion 410 and disposed between the two first side plates 431 , and the second side plates 433 are disposed between the coil winding 20 and the magnetic core assembly 30 .

[0122] If the connection part 430 has only two first side plates 431 arranged opposite to each other, the two first side plates 431 form a structure with two open ends, and the connection part 430 also includes two second side plates arranged opposite to each other, the second side plate 433 is connected to the suction part 410 and arranged between the two first side plates 431, and the second side plate realizes the intermediate connection between the suction part 410 and the isolation part 420. At this time, the four sides of the suction part 410 are supported by the two first side plates 431 and the two second side plates, further ensuring the support effect of the suction part 410. At the same time, the two second side plates are equivalent to blocking the two open ends of the structure with openings 421 at both ends, so that the connection part 430 can completely wrap and isolate the outside of the coil winding 20, avoid the situation where the coil winding 20 is partially exposed, further ensure the safety distance and pressure resistance requirements of the coil winding 20, and make the connection part 430 have the advantages of high pressure resistance requirements and large safety distance.

[0123] In some possible implementations of the embodiments of the present application, the suction portion 410 , the isolation portion 420 , and the connection portion 430 may be an integrally formed structure.

[0124] Compared with the split structure, the suction part 410, the isolation part 420 and the connection part 430 are formed into an integral structure, and the integral structure is adopted to reduce the parts assembly process, and the production cost is relatively low. At the same time, the suction part 410, the isolation part 420 and the connection part 430 form a relatively closed structure, which can still meet the requirements of pressure resistance and safety distance even if an abnormality occurs, and will not cause safety problems due to failure, and has high reliability.

[0125] It can be understood that in some possible implementations of the embodiment of the present application, the protective member 40 is made of insulating material to ensure the insulation and isolation effect of the coil winding 20 and the pin 130 .

[0126] In some possible implementations of the present application, such as Fig.14 and Fig.15 As shown, along the axial direction of the coil winding 20 , openings 421 are provided on both sides of the isolation portion 420 , and the pins 130 at least partially pass under the openings 421 .

[0127] By providing openings 421 on both sides of the isolation portion 420 , the openings 421 provide escape spaces for the pins 130 , so that at least a portion of the pins 130 can extend from the openings 421 and pass through the bottom of the isolation portion 420 , so as to be connected to other electrical devices.

[0128] In some possible implementations of the present application, the isolation portion 420 includes a connecting plate 422 and two baffles 423, and the connecting plate 422 is connected to the connecting portion 430. The two baffles 423 are arranged on both sides of the connecting plate 422 along the radial direction of the coil winding 20, and the connecting plate 422 and the two baffles 423 are used to partially accommodate the pin connecting portion 120.

[0129] The connecting plate 422 of the isolation part 420 is connected to the connecting part 430, and the connecting plate 422 plays the role of connecting with the connecting part 430. Through. Two baffles 423 are arranged on both sides of the connecting plate 422 along the radial direction of the coil winding 20, so that the connecting plate 422 and the two baffles 423 form a U-shaped structure, and a receiving space is formed between the connecting plate 422 and the two baffles 423. The receiving space is used to partially receive the pin 130. Under the joint action of the connecting plate 422 and the two baffles 423, the pin 130 is partially isolated to meet the safety distance and withstand voltage requirements of the pin 130. At the same time, the baffle 423 plays the role of the supporting leg of the entire transformer to ensure the supporting effect of the transformer. In addition, the lead end of the coil winding 20 is connected to the pin 130, that is, the pin 130 is arranged at both ends of the coil winding 20 in the axial direction. For this purpose, two baffles 423 are arranged on both sides of the connecting plate 422 in the radial direction of the coil winding 20, and the baffles 423 realize the avoidance of the connecting wire harness between the pin 130 and the coil winding 20.

[0130] In some possible implementations of the present application, such as Fig.14 and Fig.15 As shown, the surface of the protection member 40 is provided with an isolation groove 424 , specifically, the isolation groove 424 is provided on the connecting plate 422 .

[0131] The creepage distance is the shortest path between two conductive parts or between a conductive part and the device protection interface measured along the insulating surface. By providing the isolation groove 424 on the surface of the protective member 40, the creepage distance is increased, and the insulation effect is further ensured.

[0132] It is understandable that the cross-section of the isolation groove 424 can be a rectangular, triangular, arc-shaped structure, etc. This embodiment does not limit the cross-sectional shape of the isolation groove 424. As long as the effect of increasing the creepage distance can be achieved, it is within the protection scope of this embodiment.

[0133] It can be understood that two isolation grooves 424 are provided on the connecting plate 422, and the isolation grooves 424 are respectively provided on both sides of the connecting part 430, so as to ensure the isolation effect of the pin 130 and the coil winding 20 while ensuring the symmetrical balance effect. The present embodiment does not limit the number of the isolation grooves 424, and can be adjusted according to actual production needs.

[0134] In some possible implementations of the present application, such as Fig.14 and Fig.15 As shown, along the radial direction of the coil winding 20, a first identification portion 425 is provided on one side of the protection member 40. Specifically, a first identification portion 425 is provided on one of the baffles 423, and the first identification portion 425 serves as an identification.

[0135] Since the entire protective member 40 is a symmetrical structure relative to the coil winding 20, if the protective member 40 is not provided with any identification, the two sides of the protective member 40 along the radial direction of the coil winding 20 cannot be identified, and it is difficult to confirm whether it is the left side or the right side of the protective member 40. By providing a first identification portion 425 on one side of the protective member 40 along the radial direction of the coil winding 20, the first identification portion 425 is used to identify a single side of the protective member 40, so that the left and right sides of the protective member 40 can be quickly and timely distinguished, which provides great convenience for assembly and subsequent maintenance.

[0136] In some possible implementations of the present application, such as Fig.14 and Fig.15 As shown, a second identification portion 412 is disposed on the top surface of the suction portion 410 .

[0137] Since the entire protective member 40 is a symmetrical structure relative to the coil winding 20, if the protective member 40 is not provided with any identification, the two sides of the protective member 40 cannot be identified, and it is difficult to confirm which side the protective member 40 is specifically on. By providing a second identification portion 412 on the top surface of the suction member 410, the second identification portion 412 serves as an identification, and the second identification portion 412 is used to identify a single side of the protective member 40, which can quickly and timely distinguish which side the protective member 40 is specifically on, avoiding confusion on one side, and providing great convenience for assembly and subsequent maintenance. In addition, the suction member 410 is at the top of the entire transformer, and the second identification portion 412 is provided on the top of the suction member 410 to facilitate the viewing of the second identification portion 412.

[0138] It is understandable that the second identification portion 412 can be disposed on one side of the suction part 410 in a direction perpendicular to the center line of the coil winding 20, or the second identification portion 412 can be disposed on one side of the suction part 410 in a direction perpendicular to the center line of the coil winding 20, or the second identification portion 412 can be disposed at a corner of the suction part 410. This embodiment does not limit the specific position of the second identification portion 412 in the suction part 410, and the coil winding 20 can be identified in the axial or radial direction according to actual production.

[0139] It can be understood that the first identification portion 425 and the second identification portion 412 can be set independently of each other, and the two are independent of each other and do not interfere with each other; the first identification portion 425 and the second identification portion 412 can also work together, for example, one of the identification portions is used to identify one side along the axial direction of the coil winding 20, and the other is used to identify one side along the radial direction of the coil winding 20.

[0140] It is understandable that the first identification portion 425 and the second identification portion 412 can also be called a fool-proof design, which can be manufactured by using a mold for manufacturing the protective member 40 to avoid the situation where the PIN foot identification point is omitted or printed in reverse.

[0141] In some possible implementations of the present application, such as Fig.16 and Fig.17 As shown, the frame 10 includes a bobbin 110 , the coil winding 20 is wound around the bobbin 110 , and the magnetic core assembly 30 is partially passed through the bobbin 110 .

[0142] The coil winding 20 is wound on the bobbin 110, and the bobbin 110 provides a winding position for the coil winding 20. A through hole is provided in the bobbin 110 along its center line direction, so that the two middle columns 310 of the magnetic core assembly 30 that are opposite to the magnetic core can pass through the through holes respectively, so that the magnetic core and the coil winding 20 can perform electromagnetic effect.

[0143] One of the sides of the winding drum 110 and the protective member 40 that are close to each other is provided with a positioning protrusion 411 , and the other is provided with a positioning groove 112 , and the positioning protrusion 411 is at least partially disposed in the positioning groove 112 .

[0144] If the protective member 40 is directly covered on the outside of the frame 10, it is difficult to ensure the relative position between the protective member 40 and the frame 10. One of the sides of the bobbin 51 and the protective member 40 that are close to each other is provided with a positioning protrusion 411, and the other is provided with a positioning groove 112. The positioning protrusion 411 is at least partially disposed in the positioning groove 112. Under the mutual cooperation of the positioning protrusion 411 and the positioning groove 112, the positioning between the bobbin 51 and the protective member 40 is achieved, so as to ensure the accuracy of the relative position between the protective member 40 and the frame 10 and avoid a large position offset between the protective member 40 and the frame 10.

[0145] In some possible implementations of the present application, such as Fig.17 As shown, the skeleton 10 further includes a pin connection part 120, and the number of the pin connection parts 120 can be two. The winding drum 110 is located between the two pin connection parts 120 and connected to the winding drum 110. The pin 130 is inserted into the connecting through hole 121 of the pin connection part 120. Among them, the isolation part 420 is covered outside the pin connection part 120.

[0146] The winding drum 110 and the pin 130 are connected to the pin connection part 120, and the pin connection part 120 plays the role of supporting the winding drum 110 and the pin 130. The pin connection part 120 also provides an installation position for the pin 130 to ensure the support effect of the winding drum 110 and the pin 130. By providing the isolation part 420 to cover the outside of the pin connection part 120, the part of the pin 130 located inside the pin connection part 120 can be isolated and protected.

[0147] It should be noted that the pin connection portion 120 can be made of insulating material. The pin 130 is usually made of metal material, such as phosphor bronze with a smooth surface and high finish, or matte tin plated on a nickel-plated surface.

[0148] In some possible implementations of the embodiments of the present application, the coil winding 20 may include a plurality of coils, and the plurality of coils are wound on the magnetic core assembly 30 .

[0149] The transformer provided in this embodiment is mainly used for driving control IC or driving computer and other equipment, and is widely used in many systems such as automobile OBC on-board charger, BMS battery management system, PCU power control system, ECU electrical control system and DCDC DC-DC conversion unit.

[0150] The transformer provided in this embodiment is suitable for various small-power transformer processes used in new energy vehicles. In terms of electrical performance, it requires very high withstand voltage and safety distance; in terms of mechanical performance, it requires very high vibration resistance. The transformer provided in this embodiment is a small-power transformer process structure platform with high withstand voltage and safety distance, high vibration resistance, high reliability and full automation, and this platform can be used to expand a product series corresponding to the process requirements of various small-power transformers for vehicles.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A skeleton, characterized in that: include: A bobbin for winding a coil; as well as At least one pin connection portion is provided on the end surface of the winding drum, the pin connection portion is provided with a plurality of connection through holes and at least one first wire groove, the plurality of connection through holes are arranged at intervals in a direction parallel to the end surface of the winding drum, and a pin is inserted in each of the connection through holes; Among them, the first wire passing groove is located between two adjacent connecting through holes, the first wire passing groove passes through the pin connecting part along the direction of the center line of the winding drum, and a partial area of ​​the groove wall of the first wire passing groove is located in at least one of the connecting through holes adjacent thereto to expose the pin.

2. The skeleton according to claim 1, characterized in that The first wire groove is provided on one side of at least one of the pins; And / or, the first wire groove is provided on both sides of at least one of the pins.

3. The skeleton according to claim 1 or 2, characterized in that: The pin connection portion is also provided with a second wire passing groove, which is located between two adjacent connecting through holes that are not provided with the first wire passing groove, and the second wire passing groove passes through the pin connection portion along the direction of the center line of the winding drum.

4. The skeleton according to claim 3, characterized in that The first wire passing groove or the second wire passing groove is used for two lead wires of the coil winding to pass through; A partition is provided in the first wire passing groove or the second wire passing groove, and the partition separates the two lead wires.

5. The skeleton according to claim 4, characterized in that: The first wire passing groove or the second wire passing groove comprises a first sub-groove and a second sub-groove connected to each other, wherein the first sub-groove is located between two adjacent pins; and the second sub-groove is located on a side of the first sub-groove facing the winding drum.

6. The skeleton according to claim 5, characterized in that The partition includes a first partition and / or a second partition. The first partition is located in the first sub-groove, and the second partition is located in the second sub-groove.

7. The skeleton according to claim 6, characterized in that Along the connecting direction of two pins adjacent to the first partition, the width of the first partition is greater than or equal to 0.05 mm and less than or equal to 3 mm; Alternatively, along a direction perpendicular to a center line of the bobbin, a height of the first partition is greater than or equal to 0.05 mm and less than or equal to 5 mm.

8. The skeleton according to claim 6, characterized in that Along the direction from the pin connection portion to the winding drum, the groove bottom of the second sub-groove is inclined toward the center line of the winding drum.

9. The skeleton according to claim 8, characterized in that The second partition is a triangular plate, and one side of the triangular plate is connected to the bottom of the second sub-groove.

10. The skeleton according to claim 9, characterized in that The triangular plate faces away from the bottom of the second sub-slot, and a protrusion is arranged on one side of the triangular plate facing the notch of the second sub-slot, and the side of the protrusion facing away from the triangular plate is flush with the surface of the pin connection portion.

11. The skeleton according to claim 6, characterized in that Along the direction from the pin connection portion to the bobbin, the groove walls on both sides of the second sub-groove are inclined in directions away from each other.

12. The skeleton according to claim 1 or 2, characterized in that: One end of the pin close to the winding drum extends out of the connecting through hole and is bent in a direction away from the winding drum to form a first bending portion, wherein the first bending portion is used to connect the lead wire of the coil winding; One end of the pin away from the winding drum extends out of the connecting through hole and is bent in a direction away from the winding drum to form a second bent portion, and the second bent portion is used for welding with a circuit board.

13. The skeleton according to claim 12, characterized in that A receiving cavity is provided on a side of the pin connection portion facing away from the first wire passing groove, the receiving cavity is communicated with the connecting through hole, and the receiving cavity is used to receive part of the first bending portion of the pin.

14. A transformer, characterized in that: It comprises a magnetic core assembly, a coil winding, a protective member and a skeleton as claimed in any one of claims 1 to 13; The magnetic core assembly includes two opposing magnetic cores; at least part of the winding bobbin of the skeleton is disposed in the magnetic core assembly; The coil winding is arranged on the bobbin, and the coil winding is electrically connected to the pins of the pin connecting part in the frame; The protective member includes a suction member part and an isolation member, wherein the suction member part is at least partially arranged above the frame; the isolation member is connected to the suction member part, the isolation member covers at least a portion of the winding reel and at least a portion of the pin connecting member, and the isolation member is used to isolate the pins of the pin connecting member.

15. The transformer according to claim 14, characterized in that The protective member further comprises a connecting portion, which is disposed in the magnetic core assembly, and is located between the suction member portion and the isolation portion, with two ends of the connecting portion being connected to the suction member portion and the isolation portion.

16. The transformer according to claim 15, characterized in that The connecting portion at least partially covers the frame.

17. The transformer according to claim 16, characterized in that The connecting portion includes two first side plates arranged opposite to each other, the first side plates are connected to the suction part, and the first side plates are arranged between the frame and the magnetic core assembly.

18. The transformer according to claim 17, characterized in that The first side plate is provided with a through hole, and the magnetic core component is partially passed through the through hole.

19. The transformer according to claim 14, characterized in that Along the center line direction of the coil winding, openings are provided on both sides of the isolation portion, and the pins at least partially pass through under the openings.

20. The transformer according to claim 15, characterized in that The isolation part includes a connecting plate and two baffles, and the connecting plate is connected to the connecting part; The two baffles are respectively arranged on both sides of the connecting plate in a direction perpendicular to the center line of the coil winding, and the connecting plate and the two baffles are used to partially accommodate the pin connecting part.

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