Vehicle-mounted common mode inductor

Abstract

The utility model relates to a vehicle-mounted common mode inductor which is installed on a machine board on one side of a vehicle-mounted battery. The common mode inductor structure comprises an annular magnetic core and flat copper wire coils, the annular magnetic core is vertically wound with two flat copper wire coils, the two flat copper wire coils are symmetrically arranged along the annular magnetic core, and each flat copper wire coil is fully wound on one side of the annular magnetic core; wherein the width of a flat copper wire of the flat copper wire coil ranges from 4.8 mm to 5.2 mm, the thickness of the flat copper wire of the flat copper wire coil ranges from 4.9 mm to 5.1 mm, and the turn-to-turn distance ranges from 2 mm to 3 mm. The fixing assembly is located on a machine plate on one side of the vehicle-mounted battery and comprises an insulating plate and a plurality of copper bars, the two wire outlet ends of each flat copper wire coil are each provided with one copper bar, each copper bar is connected to the machine plate, and the insulating plate is connected with the annular magnetic core in a clamped mode and fixed. The structure and the size of the vehicle-mounted common mode inductor are optimized, copper resistance is reduced, the temperature of the vehicle-mounted common mode inductor is reduced, and the problem that a large amount of loss is generated in the operation process of the common mode inductor is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the vehicle OBC filtering technical field especially relates to a vehicle common mode inductance. BACKGROUND

[0002] With the continuous development of automobile electronic technology, the demand of vehicle common mode inductance is also growing. The vehicle common mode inductance is usually used with the diameter of 0.1*800P round copper wire, and the magnetic core adopts high-conductivity ferrite plug-in structure.

[0003] The prior art CN 219497495 U discloses a four middle column flat wire vertical winding combined magnetic circuit inductor, which comprises a magnetic core, the magnetic core comprises two magnetic yokes arranged symmetrically, two magnetic column groups are symmetrically arranged between the two magnetic yokes, the two magnetic column groups are located at two ends of the length direction of the magnetic yoke, each magnetic column group comprises two magnetic columns arranged symmetrically and at intervals, and the two magnetic columns of each magnetic column group are arranged along the width direction of the magnetic yoke; a vertical winding flat wire coil is sleeved outside each magnetic column group.

[0004] However, the copper wire resistance in the related art is large, and there is large loss in the running process. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the related art, the utility model provides a vehicle common mode inductance, optimizes the structure of the vehicle common mode inductance, adjusts the structure and size, and further reduces the copper resistance and the temperature of the vehicle common mode inductance, so as to solve the problem of large loss in the running process due to large copper resistance of the common mode inductance.

[0006] The utility model provides a vehicle common mode inductance, which is installed on the one side of the vehicle battery board. The vehicle common mode inductance comprises a common mode inductance structure and a fixing assembly.

[0007] The common mode inductance structure comprises a ring-shaped magnetic core and a flat copper wire coil, two groups of the flat copper wire coils are vertically wound on the ring-shaped magnetic core, the two groups of the flat copper wire coils are symmetrically arranged along the ring-shaped magnetic core, and each group of the flat copper wire coils winds around one side of the ring-shaped magnetic core.

[0008] The width of the flat copper wire coil is 4.8mm-5.2mm, the thickness is 4.9mm-5.1mm, and the turn-to-turn distance is 2-3mm.

[0009] The fixing assembly is located on the one side of the vehicle battery board, and comprises an insulating plate and a plurality of copper bars. Two outgoing ends of each group of the flat copper wire coils are provided with one copper bar, each copper bar is connected to the board, and the insulating plate is clamped and fixed with the ring-shaped magnetic core.

[0010] The width and thickness of the flat copper wire are optimized to reduce the copper resistance of the flat copper wire coil. Increasing the inter-turn distance effectively reduces the temperature of the common mode inductor structure in the working state. The size and winding structure of the flat copper wire coil in the common mode inductor structure are optimized to reduce energy loss during the working process of the vehicle-mounted common mode inductor. The fixing assembly fixes the common mode inductor structure on one side of the vehicle-mounted battery board to improve the stability of the entire structure.

[0011] In some embodiments, the insulating plate surface is arranged along the vertical direction of the height of the annular magnetic core, and an opening is arranged on the insulating plate surface, the annular magnetic core passes through the opening, the circumferential dimension of the annular magnetic core is matched with the opening dimension of the insulating plate surface, and the annular magnetic core is clamped and fixed at the opening of the insulating plate surface.

[0012] The circumferential dimension of the annular magnetic core is matched with the opening dimension of the insulating plate surface, which facilitates the annular magnetic core to pass through the opening. The magnetic core can be clamped at the opening to further improve the stability of the overall structure.

[0013] In some embodiments, the insulating plate is rectangular, and a notch is arranged at each of the four corners.

[0014] The notches are arranged at the four corners of the insulating plate to facilitate the arrangement of the copper bars, so that the structure is compact and the installation space of the vehicle-mounted common mode inductor is saved.

[0015] In some embodiments, a plurality of heat dissipation holes are arranged on the insulating plate.

[0016] The vehicle-mounted common mode inductor generates heat in the working state. The insulating plate not only has insulation function, but also can dissipate the heat generated in the working state, so as to facilitate the better working of the vehicle-mounted common mode inductor and reduce the burning of parts.

[0017] In some embodiments, each copper bar includes a first copper bar segment and a second copper bar segment arranged in a bending manner; the first copper bar segment is provided with a through hole, and in each group of flat copper wire coils, the wire outlet end close to the insulating plate passes through the through hole of the first copper bar segment of one copper bar to connect the copper bar, and the wire outlet end away from the insulating plate passes through the through hole of the first copper bar segment of another copper bar to connect the copper bar.

[0018] The wire outlet end of the flat copper wire coil is connected and fixed with the copper bar to limit the displacement of the copper bar, further improving the stability of the structure.

[0019] In some embodiments, the plurality of copper bars includes a front copper bar and a rear copper bar, a height of a first copper bar section of the front copper bar is greater than a height of a first copper bar section of the rear copper bar; the front copper bar connects outgoing wire ends of two groups of the flat copper wire coils away from the insulating plate, and the rear copper bar connects outgoing wire ends of the two groups of the flat copper wire coils close to the insulating plate.

[0020] The front copper bar and the rear copper bar are set to different heights, facilitating installation on the machine plate, so that the overall structure of the vehicle-mounted common mode inductor can better adapt to the machine plate.

[0021] In some embodiments, the vehicle-mounted common mode inductor further includes a plurality of auxiliary fixing members, one side of one of the auxiliary fixing members is connected to a second copper bar section of one of the copper bars, and the other side of the auxiliary fixing member is connected to the machine plate.

[0022] The auxiliary fixing members are arranged on the copper bars, and the auxiliary fixing members are connected to the machine plate, which facilitates fixing of the copper bars on the machine plate and further fixing of the vehicle-mounted common mode inductor on the machine plate, so that the overall structure can be more stable.

[0023] In some embodiments, the vehicle-mounted common mode inductor further includes a plurality of fixing members, outer sides of the plurality of fixing members are provided with threads, the auxiliary fixing members are provided with fixing holes, inner sides of the fixing holes are provided with threads; the second copper bar section of the copper bar is provided with a mounting hole, and the mounting hole is aligned with the fixing hole of the auxiliary fixing member; one of the fixing members passes through the mounting hole of one of the copper bars and the fixing hole of one of the auxiliary fixing members, and cooperates with the threads on the inner side of the fixing hole, so as to fix the fixing assembly and the common mode inductor structure on the machine plate.

[0024] The plurality of fixing members are provided with threads, and the auxiliary fixing members are also provided with matching threads, the fixing members and the auxiliary fixing members cooperate with each other, and the fixing members fix the copper bars on the machine plate through the auxiliary fixing members. In this way, the stability of the vehicle-mounted common mode inductor can be improved.

[0025] In some embodiments, the number of winding turns of the flat copper wire coil is 3.

[0026] The number of winding turns of the flat copper wire coil is reduced, the heat dissipation capacity is further improved, and the working performance of the vehicle-mounted common mode inductor is optimized.

[0027] Based on the above technical solutions, in the embodiments of the utility model, the structure of the vehicle-mounted common mode inductor is optimized, the winding structure of the flat copper wire coil and the size of the flat copper wire are adjusted, and then the copper resistance is reduced. The turn-to-turn distance is increased, and the heat dissipation holes are arranged on the insulating plate to improve the heat dissipation capacity of the vehicle-mounted common mode inductor, and further reduce the temperature of the vehicle-mounted common mode inductor during the working process. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0029] Figure 1 Structure schematic view of one embodiment of the vehicle-mounted common mode inductor of the present application;

[0030] Figure 2 Structure schematic view of another embodiment of the vehicle-mounted common mode inductor of the present application;

[0031] Figure 3 Structure schematic view of another embodiment of the vehicle-mounted common mode inductor of the present application;

[0032] Figure 4 Structure schematic view of the flat copper wire coil in one embodiment of the vehicle-mounted common mode inductor of the present application;

[0033] Figure 5 Structure schematic view of the ring-shaped magnetic core in one embodiment of the vehicle-mounted common mode inductor of the present application;

[0034] Figure 6 Structure schematic view of the insulating plate in one embodiment of the vehicle-mounted common mode inductor of the present application;

[0035] Figure 7 Structure schematic view of the rear copper bar in one embodiment of the vehicle-mounted common mode inductor of the present application;

[0036] Figure 8 Structure schematic view of the front copper bar in one embodiment of the vehicle-mounted common mode inductor of the present application;

[0037] Figure 9 Structure schematic view of the auxiliary fixing member in one embodiment of the vehicle-mounted common mode inductor of the present application.

[0038] In the drawings:

[0039] 1, flat copper wire coil; 2, ring-shaped magnetic core; 3, rear copper bar; 4, insulating plate; 5, front copper bar; 6, auxiliary fixing member;

[0040] 31, first through hole; 32, first mounting hole;

[0041] 41, opening; 42, heat dissipation hole;

[0042] 51, second through hole; 52, second mounting hole. DETAILED DESCRIPTION

[0043] With reference to the accompanying drawings, the technical solutions in the embodiments will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0044] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0045] The terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0046] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , in one illustrative embodiment of the vehicle-mounted common mode inductor of the present application, the vehicle-mounted common mode inductor comprises a common mode inductor structure and a fixing assembly.

[0048] The common mode inductor structure comprises an annular magnetic core 2 and a flat copper wire coil 1, two groups of flat copper wire coils 1 are vertically wound on the annular magnetic core 2, and the two groups of flat copper wire coils 1 are symmetrically arranged along the annular magnetic core 2, and each group of flat copper wire coils 1 winds around one side of the annular magnetic core 2.

[0049] The width of the flat copper wire coil 1 is 4.8-5.2 mm, the thickness is 4.9-5.1 mm, and the distance between turns is 2-3 mm. In this embodiment, the width of the flat copper wire refers to the size between the side of the coil close to the annular magnetic core 2 and the outer side of the coil, the thickness of the flat copper wire refers to the size of the flat copper wire in the direction of adjacent coils, the number of turns of the coil refers to the number of turns of the coil, and the distance between turns refers to the distance between two adjacent turns of the coil.

[0050] The fixing assembly is located on the machine plate on one side of the vehicle-mounted battery and includes an insulating plate 4 and multiple copper bars. Each group of flat copper wire coils 1 is provided with a copper bar at both wire outlets, each copper bar is connected to the machine plate, and the insulating plate 4 is clamped and fixed with the annular magnetic core 2.

[0051] Optimizing the width and thickness of the flat copper wire can reduce the copper resistance of the flat copper wire coil 1. Increasing the distance between turns can effectively reduce the temperature of the common-mode inductance structure in the working state. Optimizing the size and winding structure of the flat copper wire coil 1 in the common-mode inductance structure can reduce energy loss during the working process of the vehicle-mounted common-mode inductance. The fixing assembly fixes the common-mode inductance structure on the machine plate on one side of the vehicle-mounted battery, thereby improving the stability of the entire structure.

[0052] In some embodiments, the insulating plate 4 is provided along the vertical height direction of the annular magnetic core 2, and the insulating plate 4 is provided with an opening 41. The annular magnetic core 2 passes through the opening 41, the circumferential size of the annular magnetic core 2 is matched with the size of the opening 41 of the insulating plate 4, and the annular magnetic core 2 is clamped and fixed at the opening 41 of the insulating plate 4.

[0053] The circumferential size of the annular magnetic core 2 is matched with the size of the opening 41 of the insulating plate 4, which facilitates the annular magnetic core 2 to pass through the opening 41. The annular magnetic core 2 can be clamped at the opening 41 and will not come out of the opening 41, thereby further improving the stability of the overall structure.

[0054] Specifically, the opening 41 of the insulating plate 4 is rectangular, and the size of the opening 41 is set as follows: the length is 50 mm, and the width is 21 mm.

[0055] Specifically, the size of the annular magnetic core 2 is set as follows: the length is 49 mm, the width is 48 mm, and the height is 21 mm. Figure 5 The left-right direction shown is the length direction, the up-down direction is the height direction, and the vertical paper direction is the width direction.

[0056] The annular magnetic core 2 passes through the opening of the insulating plate 4, the length direction of the annular magnetic core 2 is matched with the length direction of the opening 41 of the insulating plate 4, and the width direction of the annular magnetic core 2 is matched with the width direction of the opening 41 of the insulating plate 4, so that the annular magnetic core 2 can be clamped at the opening 41 and will not come out of the opening 41.

[0057] In some embodiments, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 6 , the insulating plate 4 is rectangular, and a notch is arranged at each of the four corners, and a copper bar is arranged at each notch.

[0058] The notches arranged at the four corners of the insulating plate 4 facilitate the arrangement of the copper bars, make the structure compact, and save the installation space of the vehicle-mounted common-mode inductor.

[0059] In some embodiments, as shown in Figure 6 , a plurality of heat dissipation holes 42 are arranged on the insulating plate 4.

[0060] The vehicle-mounted common-mode inductor generates heat in the working state. The insulating plate 4 not only has insulation, but also dissipates the heat generated in the working state through the plurality of heat dissipation holes 42, which facilitates the better working of the vehicle-mounted common-mode inductor and reduces the burning of parts.

[0061] In some embodiments, as shown in Figure 7 and 8 , each copper bar includes a first copper bar segment and a second copper bar segment arranged in a bent manner. The first copper bar segment is provided with a through hole. Among the two wire outlets of each group of flat copper wire coils 1, the wire outlet close to the insulating plate 4 passes through the through hole of the first copper bar segment of one copper bar to connect the copper bar. The wire outlet away from the insulating plate 4 passes through the through hole of the first copper bar segment of another copper bar to connect the copper bar.

[0062] The wire outlets of the flat copper wire coils 1 are connected and fixed with the copper bars, which limits the displacement of the copper bars and further improves the stability of the structure.

[0063] In some embodiments, the plurality of copper bars include a front copper bar 5 and a rear copper bar 3, and the height of the first copper bar segment of the front copper bar 5 is greater than the height of the first copper bar segment of the rear copper bar 3. The front copper bar 5 is connected to the wire outlets of the two groups of flat copper wire coils 1 away from the insulating plate 4, and the rear copper bar 3 is connected to the wire outlets of the two groups of flat copper wire coils 1 close to the insulating plate 4.

[0064] Due to the structure of the machine plate, the copper bars are not arranged on the same plane. The front copper bar 5 and the rear copper bar 3 are arranged with different heights, which facilitates the installation on the machine plate, and makes the overall structure of the vehicle-mounted common-mode inductor better adapt to the machine plate.

[0065] Specifically, one group of flat copper wire coils 1 includes two wire outlets. Among them, the wire outlet close to the insulating plate 4 passes through the second through hole 51 of the first copper bar segment of a front copper bar 5 to connect the front copper bar 5. The wire outlet away from the insulating plate 4 passes through the first through hole 31 of the first copper bar segment of a rear copper bar 3 to connect the rear copper bar 3. The first through hole 31 and the second through hole 51 are rectangular.

[0066] Specifically, the length of the first copper bar section of the front copper bar 5 is greater than the length of the first copper bar section of the rear copper bar 3.

[0067] In some embodiments, as shown in Figure 1 and Figure 2 The vehicle-mounted common mode inductor further comprises a plurality of auxiliary fixing members 6, one side of an auxiliary fixing member 6 is connected to a second copper bar section of a copper bar, and the other side of the auxiliary fixing member 6 is connected to the machine plate.

[0068] The auxiliary fixing member 6 is arranged on the copper bar, and the auxiliary fixing member 6 is connected to the machine plate, which is conducive to fixing the copper bar on the machine plate and further fixing the vehicle-mounted common mode inductor on the machine plate, so that the overall structure can be more stable.

[0069] In some embodiments, the vehicle-mounted common mode inductor further comprises a plurality of fixing members, and the plurality of fixing members are provided with threads on the outer sides, as shown in Figure 9 The auxiliary fixing member 6 is provided with a fixing hole, and the fixing hole is provided with threads on the inner side; the second copper bar section of the copper bar is provided with a mounting hole, which is aligned with the fixing hole of the auxiliary fixing member 6; and a fixing member passes through the mounting hole of a copper bar and the fixing hole of an auxiliary fixing member 6, and cooperates with the threads on the inner side of the fixing hole, so as to fix the fixing assembly and the common mode inductor structure on the machine plate.

[0070] The plurality of fixing members are provided with threads, and the auxiliary fixing member 6 is also provided with matching threads, so that the fixing member and the auxiliary fixing member 6 cooperate with each other, and the fixing member fixes the copper bar on the machine plate through the auxiliary fixing member 6. In this way, the stability of the vehicle-mounted common mode inductor can be improved.

[0071] Specifically, the second copper bar section of the rear copper bar 3 is provided with a first mounting hole 32. The second copper bar section of the front copper bar 5 is provided with a second mounting hole 52. The first mounting hole 32 and the second mounting hole 52 are circular.

[0072] The auxiliary fixing member 6 is arranged as an M6 rivet nut, and the fixing member is arranged as a screw matched with the M6 rivet nut.

[0073] In some embodiments, a plurality of copper columns are arranged on the machine plate. During installation, one copper bar corresponds to one copper column, and after the copper bar and the copper column are connected, the copper bar is fixed on the machine plate through the fixing member and the auxiliary fixing member 6, and further the overall structure of the vehicle-mounted common mode inductor is fixed on the machine plate.

[0074] In some embodiments, the number of winding turns of the flat copper wire coil 1 is 3 turns.

[0075] Reducing the number of winding turns of the flat copper wire coil 1 further improves the heat dissipation capacity and optimizes the working performance of the vehicle-mounted common mode inductor.

[0076] In practical application, the annular magnetic core 2 uses a nanocrystalline magnetic core with high magnetic permeability, the number of winding turns is set to 3 turns, the inter-turn distance is set to a distance of 2-3 mm between turns, the copper resistance of the flat copper wire coil 1 is reduced from 0.9 m Omega in the prior art to 0.25 m Omega, thereby reducing the product whole machine temperature rise, and the product temperature rise is reduced from 145 degrees in the prior art to 125 degrees, meeting the requirement of reducing the whole machine environment.

[0077] In the working process, the vehicle-mounted common mode inductor plays a filtering role when the battery is powered. After the battery provides direct current, the direct current is converted into alternating current through the inverter inductor, and then the alternating current is filtered through the common mode inductor of the application to provide stable alternating current for power supply of related equipment.

[0078] Through the description of the plurality of embodiments of the vehicle-mounted common mode inductor of the application, it can be seen that the vehicle-mounted common mode inductor embodiments of the application have at least one or more of the following advantages:

[0079] 1. The structure of the vehicle-mounted common mode inductor is optimized, the winding structure of the flat copper wire coil and the size of the flat copper wire are adjusted, and then the copper resistance is reduced.

[0080] 2. The inter-turn distance is increased, and the heat dissipation holes are arranged on the insulating plate to improve the heat dissipation capacity of the vehicle-mounted common mode inductor, and further reduce the temperature of the vehicle-mounted common mode inductor in the working process.

[0081] Finally, it should be noted that: in the specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to.

[0082] The above embodiments are only used to illustrate the technical solutions of the application and not to limit them. Although the application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the application can be modified or some technical features can be replaced by equivalent ones without departing from the spirit of the application. They should be covered in the technical solution range of the application.

Claims

1. A vehicle-mounted common mode inductor mounted on a board on one side of a vehicle-mounted battery, characterized by comprising: The common mode inductance structure comprises a toroidal magnetic core and a flat copper wire coil, two groups of the flat copper wire coil are vertically wound on the toroidal magnetic core, and the two groups of the flat copper wire coil are symmetrically arranged along the toroidal magnetic core, and each group of the flat copper wire coil is wound around one side of the toroidal magnetic core. The width of the flat copper wire of the flat copper wire coil ranges from 4.8 mm to 5.2 mm, the thickness ranges from 4.9 mm to 5.1 mm, and the distance between turns ranges from 2 mm to 3 mm. The fixing assembly is located on the machine plate on one side of the vehicle-mounted battery and comprises an insulating plate and a plurality of copper bars, each of the two outgoing ends of each group of the flat copper wire coil is provided with one of the copper bars, each of the copper bars is connected to the machine plate, and the insulating plate is clamped and fixed with the toroidal magnetic core. The surface of the insulating plate is arranged along the vertical direction of the height of the toroidal magnetic core, the surface of the insulating plate is provided with an opening, the toroidal magnetic core passes through the opening, the circumferential dimension of the toroidal magnetic core is matched with the opening dimension of the surface of the insulating plate, and the toroidal magnetic core is clamped and fixed at the opening of the surface of the insulating plate.

2. The on-board common mode inductor of claim 1, wherein, The insulating plate is rectangular, and a notch is arranged at each of the four corners.

3. The on-board common mode inductor of claim 2, wherein, A plurality of heat dissipation holes are arranged on the insulating plate.

4. The on-board common mode inductor of claim 2, wherein, Each of the copper bars comprises a first copper bar segment and a second copper bar segment arranged in a bent manner; the first copper bar segment is provided with a through hole, and in the two outgoing ends of each group of the flat copper wire coil, the outgoing end close to the insulating plate passes through the through hole of the first copper bar segment of the copper bar to connect the copper bar, and the outgoing end away from the insulating plate passes through the through hole of the first copper bar segment of the other copper bar to connect the other copper bar.

5. The on-board common mode inductor of claim 1, wherein, The plurality of copper bars comprise front copper bars and rear copper bars, the height of the first copper bar segment of the front copper bar is greater than the height of the first copper bar segment of the rear copper bar, the front copper bar is connected to the outgoing end away from the insulating plate in the two groups of the flat copper wire coil, and the rear copper bar is connected to the outgoing end close to the insulating plate in the two groups of the flat copper wire coil.

6. The on-board common mode inductor of claim 5, wherein, Further comprising:

7. The on-board common mode inductor of claim 5, wherein, A plurality of auxiliary fixing members, one side of the auxiliary fixing member is connected to the second copper bar segment of the copper bar, and the other side of the auxiliary fixing member is connected to the machine plate. Further comprising:

8. The on-board common mode inductor of claim 7, wherein, A plurality of fixing members, the outer side of the fixing member is provided with a thread, the auxiliary fixing member is provided with a fixing hole, the inner side of the fixing hole is provided with a thread, the second copper bar segment of the copper bar is provided with a mounting hole, and the mounting hole is aligned with the fixing hole of the auxiliary fixing member, one of the fixing members passes through the mounting hole of one of the copper bars and the fixing hole of one of the auxiliary fixing members, and cooperates with the thread on the inner side of the fixing hole to fix the fixing assembly and the common mode inductance structure on the machine plate. The number of winding turns of the flat copper wire coil is 3.

9. The on-board common mode inductor of claim 1, wherein, ​

Images