Filter device

Abstract

A filter device is provided with: an annular magnetic core (60) having a through-hole (63) penetrating in the arrangement direction in which a first electrical component and a second electrical component are arranged; and bus bars (130, 140) that extend so as to pass through the through holes. The bus bar includes a first electrical connection portion (133, 143), a second electrical connection portion (135, 145), and a link portion (134, 144). The first electrical connection part or the second electrical connection part passes through the through hole, and the width of the first electrical connection part or the second electrical connection part passing through the through hole in the width direction is smaller than the diameter of the through hole in the width direction. The occupied width in the thickness direction of the first electrical connection part or the second electrical connection part passing through the through hole is smaller than the diameter in the thickness direction of the through hole.

Description

[0001] Citation of relevant applications

[0002] This application is based on Japanese Patent Application No. 2023-066664, filed on April 14, 2023, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The disclosure described in this specification relates to a filter device. Background Technology

[0004] The busbar unit described in Patent Document 1 has a magnetic core and a busbar. The magnetic core is formed into a ring shape with a through hole. The busbar has a main body, a crossing portion, and a folded-back portion. The main body is disposed within the through hole. The crossing portion bends along a direction intersecting the axial direction on the outside of the through hole on one side of the axial direction. The folded-back portion extends to the other side of the axial direction on the outside of the magnetic core.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent No. 6417600 Summary of the Invention

[0008] In Patent Document 1, a front end portion connected to a power control unit is provided at the end of the main body. A front end portion connected to each phase terminal of the rotary motor is provided at the end of the folded-back portion. A busbar unit is provided between the power control unit and the rotary motor. The power control unit and the rotary motor are arranged in a direction orthogonal to the axis of the through hole. The busbar extends along the inner, lower, and outer surfaces of the magnetic core between the two front ends. Therefore, in Patent Document 1, the size of the busbar tends to increase in the direction of extension at the intersection, potentially leading to a larger busbar unit.

[0009] The purpose of this disclosure is to provide a miniaturized filter device.

[0010] One embodiment of the filter device disclosed herein is connected to a first electrical component and a second electrical component, and is disposed between the first electrical component and the second electrical component in an arrangement direction thereof.

[0011] The above-mentioned filter device includes:

[0012] A ring-shaped magnetic core, the magnetic core having a through hole extending along the arrangement direction; and

[0013] The busbar, which electrically connects the first electrical component and the second electrical component, extends through a through-hole.

[0014] The busbar includes:

[0015] A first electrical connection portion, which is connected to a first electrical component and extends along the arrangement direction;

[0016] The second electrical connection portion is disposed at a position offset from the first electrical connection portion in a width direction orthogonal to the arrangement direction and its own thickness direction, connects to the second electrical component, and extends in the arrangement direction; and

[0017] The connecting portion connects the first electrical connection portion and the second electrical connection portion in the arrangement direction.

[0018] The first electrical connection or the second electrical connection passes through the through hole.

[0019] The width occupied by the first or second electrical connection portion passing through the through hole in the width direction is smaller than the diameter in the width direction of the through hole.

[0020] The width occupied in the thickness direction of the first or second electrical connection portion passing through the through hole is smaller than the diameter in the thickness direction of the through hole.

[0021] The first or second electrical connection portion passing through the through hole is positioned within the projection area of ​​the magnetic core in the alignment direction. This facilitates the suppression of the busbar's size in the width direction, enabling miniaturization of the filter device.

[0022] Furthermore, the reference numerals in parentheses in the appended claims merely indicate the correspondence with the structures described in the embodiments described later, and do not impose any limitation on the scope of the technology. Attached Figure Description

[0023] Figure 1 It is a circuit diagram of electrical components.

[0024] Figure 2 This is an exploded 3D view of the filter device.

[0025] Figure 3 This is a top view of the filter device.

[0026] Figure 4 From Figure 3 The top view of the filter device as seen from the IV side is shown.

[0027] Figure 5 From Figure 3 The top view of the filter device as seen from the V side.

[0028] Figure 6 From Figure 3The top view of the filter device as seen from side VI.

[0029] Figure 7 This is a top view illustrating a variation of the busbar.

[0030] Figure 8 This is a top view illustrating a variation of the busbar.

[0031] Figure 9 This is a perspective view illustrating a modified example of the configuration of the magnetic core and the busbar.

[0032] Figure 10 This is a perspective view illustrating a modified example of the configuration of the magnetic core and the busbar. Detailed Implementation

[0033] Hereinafter, with reference to the accompanying drawings, various methods for implementing this disclosure will be described. In each method, sometimes the same reference numerals are used to denote parts corresponding to matters described in the preceding methods, and repeated descriptions are omitted. Where only a portion of the structure is described in each method, the previously described methods can be applied to the other parts of the structure.

[0034] Furthermore, not only are combinations of the parts that can be combined explicitly described in each embodiment, but even if not explicitly described, embodiments, embodiments and variations, and variations can be partially combined with each other, as long as they do not hinder the combination.

[0035] (First Implementation)

[0036] <In-vehicle System>

[0037] Figure 1 This is a circuit diagram of the electrical components 10 installed in the vehicle system 1. The vehicle system 1 includes a battery 2, an electric generator 4, and electrical components 10. The vehicle equipped with the vehicle system 1 is a hybrid electric vehicle capable of switching and / or combining the driving force of the engine and the driving force of the electric generator 4 for operation. The engine and the electric generator 4 are connected to each other via a gear mechanism.

[0038] Electrical components 10 include an inverter 11, a control circuit board 15, a smoothing capacitor 20, a Y capacitor 30, a filter device 90, a P-side wiring 110, an N-side wiring 120, and a connecting bus 150. The P-side wiring 110 is a conductive component connected to the positive terminal of the battery 2. The N-side wiring 120 is a conductive component connected to the negative terminal of the battery 2. The connecting bus 150 is a conductive component connecting the inverter 11 to the electric generator 4.

[0039] Inverter 11 is connected to P-side wiring 110 and N-side wiring 120. Inverter 11 has multiple semiconductor modules 12. Semiconductor module 12 has two switching elements 13 and two diodes 13A. The two switching elements 13 are connected in series between P-side wiring 110 and N-side wiring 120.

[0040] A P-side input terminal 11A, connected to the P-side wiring 110, is connected to the collector of one of the two switching elements 13 located on the high-potential side. An N-side input terminal 11B, connected to the N-side wiring 120, is connected to the emitter of one of the two switching elements 13 located on the low-potential side. The anode of diode 13A is connected to the emitter of the corresponding switching element 13. The cathode of diode 13A is connected to the collector of the corresponding switching element 13.

[0041] The emitter of the high-potential side switch element 13 and the collector of the N-side switch element 13 are connected to motor terminals 11C, which are connected to the electric generator 4. Multiple switch elements 13 convert the DC power supplied from the battery 2 into AC power capable of driving the electric generator 4. The converted power is supplied to the electric generator 4 via the connecting bus 150.

[0042] The control circuit board 15 controls the on / off switching of multiple switching elements 13. A control circuit for controlling the on / off switching of the multiple switching elements 13 is mounted on the control circuit board 15. The connection terminals 11D of the multiple switching elements 13 are soldered to the control circuit board 15. The connection terminals 11D of the multiple switching elements 13 are electrically connected to the control circuit board 15.

[0043] The smoothing capacitor 20 primarily smooths the DC voltage supplied from the battery 2. The smoothing capacitor 20 is connected to the P-side wiring 110 and the N-side wiring 120. The smoothing capacitor 20 is connected in parallel with the inverter 11. The P-side wiring 110 and the N-side wiring 120 electrically connect the inverter 11, the smoothing capacitor 20, and the battery 2.

[0044] The filter device 90 includes a magnetic core 60, a base 70, fastening members 80, 81, 82, and 83, a P-side busbar 130, and an N-side busbar 140. The P-side busbar 130 is part of the P-side wiring 110. Sometimes the P-side busbar 130 is referred to as the first busbar. The N-side busbar 140 is part of the N-side wiring 120. Sometimes the N-side busbar 140 is referred to as the second busbar. Sometimes the P-side busbar 130 and the N-side busbar 140 are combined and referred to as PN buses 130 and 140. The magnetic core 60 is provided on the PN buses 130 and 140.

[0045] The magnetic core 60 has a magnetic core body 61 and a locking part 62. The magnetic core body 61 is formed in a ring shape. A through hole 63 extending in one direction is divided by the ring-shaped magnetic core body 61. The P-side busbar 130 and the N-side busbar 140 pass through the through hole 63. The magnetic core 60 can remove noise components caused by the current flowing through the PN busbars 130 and 140. Therefore, the device containing the magnetic core 60 is sometimes called a filter device 90. The main material of the magnetic core body 61 includes ferrite, electromagnetic steel sheet, amorphous alloy, etc. The magnetic body is sealed by an insulating member. The magnetic body is sealed by an insulating member to form the magnetic core body 61.

[0046] A locking portion 62 is provided on the outer periphery of the magnetic core body 61. The locking portion 62 extends away from the magnetic core body 61 in a direction orthogonal to one direction. The locking portion 62 is a locking portion for mounting the magnetic core body 61 to the base 70. By mounting the locking portion 62 to the base 70 using the fastening member 80, the magnetic core body 61 is fixed to the base 70.

[0047] Y capacitor 30 primarily removes noise components leaking from inverter 11. Y capacitor 30 has two capacitor elements 31 and 32, two Y capacitor buses 41 and 42, and a ground bus 50. Sometimes, the one of the two capacitor elements 31 and 32 located on the P-side wiring 110 side is referred to as P-side capacitor element 31. Sometimes, the one of the two capacitor elements 31 and 32 located on the N-side wiring 120 side is referred to as N-side capacitor element 32.

[0048] Sometimes, the one of the two Y capacitor buses 41 and 42 connected to the P-side capacitor element 31 is referred to as the P-side Y capacitor bus 41. Sometimes, the P-side Y capacitor bus 41 is called the first capacitor bus. The P-side Y capacitor bus 41 has a P-side first bus terminal 41A connected to the P-side capacitor element 31 and a P-side second bus terminal connected to the P-side wiring 110. The P-side capacitor element 31 is electrically connected to the P-side wiring 110 via the P-side Y capacitor bus 41.

[0049] Sometimes, the one of the two Y capacitor buses 41 and 42 connected to the N-side capacitor element 32 is referred to as the N-side Y capacitor bus 42. Sometimes, the N-side Y capacitor bus 42 is referred to as the second capacitor bus. The N-side Y capacitor bus 42 has an N-side first bus terminal 42A connected to the N-side capacitor element 32 and an N-side second bus terminal connected to the N-side wiring 120. The N-side capacitor element 32 is electrically connected to the N-side wiring 120 via the N-side Y capacitor bus 42.

[0050] The grounding busbar 50 has a P-side GND terminal connected to the P-side capacitor element 31, an N-side GND terminal connected to the N-side capacitor element 32, and a grounding connection terminal 53 connected to the grounding element via the base 70. The grounding busbar 50 extends in a manner that connects the P-side GND terminal, the N-side GND terminal, and the grounding terminal 51. The grounding busbar 50 is connected to the capacitor elements 31 and 32 and is electrically connected to the grounding element.

[0051] The grounding bus 50 is electrically connected to the chassis or other vehicle body grounding components via the base 70. Capacitor elements 31 and 32 remove noise components leaking from the inverter 11 by allowing them to flow through the grounding bus 50 to the vehicle body grounding components. Furthermore, capacitor elements 31 and 32 are not limited to noise components leaking from the inverter 11, but can also remove noise components flowing through the PN buses 130 and 140.

[0052] Figure 2 This is an exploded perspective view of filter device 90. Figure 3 This is a top view of filter device 90. Figure 4 From Figure 3 The top view of the filter device 90 as seen from the IV side. Figure 5 From Figure 3 The top view of the filter device 90 as seen from the V side. Figure 6 From Figure 3 The top view of the filter device 90 as seen from the VI side. Figure 7 This is a top view illustrating a variation of busbars 130 and 140. Sometimes the thickness direction of busbars 130 and 140 is called the thickness direction TD. Sometimes a direction orthogonal to the thickness direction TD is called the depth direction DP. Sometimes a direction orthogonal to both the thickness direction TD and the depth direction DP is called the width direction WD. The thickness direction TD, the depth direction DP, and the width direction WD are three mutually orthogonal directions.

[0053] PN buses 130 and 140 electrically connect battery 2 and Y capacitor 30. A portion of PN buses 130 and 140 bends along the width direction WD and extends along the depth direction DP. PN buses 130 and 140 have a stepped shape. Battery 2 and Y capacitor 30 are arranged in the depth direction DP. PN buses 130 and 140 are provided between battery 2 and Y capacitor 30 in the depth direction DP, which is the arrangement direction of battery 2 and Y capacitor 30. Battery 2 is sometimes referred to as the first electrical component. Y capacitor 30 is sometimes referred to as the second electrical component.

[0054] At one end of the DP direction of the PN busbars 130 and 140, a first terminal 131 or 141 connected to the battery 2 is provided. At the other end of the DP direction of the PN busbars 130 and 140, a second terminal 132 or 142 connected to the Y capacitor 30 is provided. Sometimes the first terminal of the P-side busbar 130 is referred to as the P-side first terminal 131. Sometimes the second terminal of the P-side busbar 130 is referred to as the P-side second terminal 132.

[0055] <P-side busbar>

[0056] The P-side busbar 130 has a first extension 133, a second extension 134, and a third extension 135. The first extension 133 and the third extension 135 are separately arranged in the width direction WD. The first extension 133 is located further inward in the width direction than the third extension 135 at a position WD+. The third extension 135 is located further inward in the width direction than the first extension 133 at a position closer to the front in the width direction at WD-.

[0057] The first extension 133 and the third extension 135 extend along the depth direction DP. The first extension 133 is located closer to the front side DP- in the depth direction than the third extension 135. The third extension 135 is located closer to the inner side DP+ in the depth direction than the first extension 133. A first terminal 131 on the P side is provided at the end of the first extension 133 near the front side DP- in the depth direction. A second terminal 132 on the P side is provided at the end of the third extension 135 at the inner side DP+ in the depth direction.

[0058] A second extension 134 is provided to connect the end of the first extension 133 opposite to the first terminal 131 on the P side and the end of the third extension 135 opposite to the second terminal 132 on the P side. The second extension 134 is sometimes referred to as a connecting portion. In the depth direction DP, the second extension 133 is provided between the first extension 133 and the third extension 135. In the width direction WD, the second extension 133 is provided between the first extension 133 and the third extension 135. When viewed from the thickness direction TD, the second extension 134 extends along the width direction WD. The angle between the first extension 133 and the second extension 134 is a right angle or approximately a right angle. The angle between the third extension 135 and the second extension 134 is a right angle or approximately a right angle. When viewed from the thickness direction TD, the P-side generatrix 130 has a crank shape.

[0059] The second extension 134 has three consecutive extension pieces 134A, 134B, and 134C. These three extension pieces 134A, 134B, and 134C are sometimes referred to as the P-side first extension piece 134A, the P-side second extension piece 134B, and the P-side third extension piece 134C. The P-side first extension piece 134A is connected to the end of the first extension 133 opposite to the P-side first terminal 131. The P-side first extension piece 134A extends from the first extension 133 toward the third extension 135 in the width direction WD.

[0060] Furthermore, the position of the first extension 133 in the thickness direction TD is different from the position of the third extension 135 in the thickness direction TD. A third extension piece 134C on the P side is connected to the end of the third extension 135 opposite to the second terminal 132 on the P side. The third extension piece 134C on the P side extends from the third extension 135 toward the first extension 133 and in the width direction WD.

[0061] Furthermore, a second extension piece 134B on the P side is provided to connect the first extension piece 134A on the P side to the third extension piece 134C on the P side. The second extension piece 134B on the P side extends along the thickness direction TD. The first extension piece 134A, the second extension piece 134B, and the third extension piece 134C on the P side are continuous. The first extension piece 134A, the second extension piece 134B, and the third extension piece 134C on the P side form a stepped shape of one level. Sometimes the lower side TD- of the stepped shape in the thickness direction is referred to as the lower level. Sometimes the upper side TD+ of the stepped shape in the thickness direction is referred to as the upper level. The first extension portion 133 and the first extension piece 134A on the P side are provided on the lower level side. The third extension portion 135 and the third extension piece 134C on the P side are provided on the upper level side. The second extension piece 134B on the P side is provided to connect the upper level and the lower level.

[0062] The magnetic core body 61 is formed in a ring shape around the depth direction DP. The magnetic core body 61 has a through hole 63 extending through the depth direction DP on the inner side of the ring. A third extension 135 passes through the through hole 63. The width WD of the third extension 135 is smaller than the diameter of the through hole 63 in the width direction. The thickness TD of the third extension 135 is smaller than the diameter of the through hole 63 in the thickness direction. Furthermore, a second extension 134 is included within the projection area of ​​the magnetic core 60 in the depth direction DP.

[0063] The width occupied by the third extension 135 in the width direction WD is equal to the distance between the point DP+ on the inner side of the width direction and the point WD- on the front side of the width direction. Sometimes, the width occupied by the third extension 135 in the width direction WD is also referred to as the size of the third extension 135 in the width direction WD. The width occupied by the third extension 135 in the thickness direction TD is equal to the distance between the point TD+ on the upper side of the thickness direction and the point TD- on the lower side of the thickness direction. The width occupied by the third extension 135 in the thickness direction TD is sometimes referred to as the size of the third extension 135 in the thickness direction TD.

[0064] Furthermore, the length of the third extension 135 in the depth direction DP is longer than the length of the through hole 63 in the depth direction DP. The length of the third extension 135 in the depth direction DP is longer than the diameter of the through hole 63 in the width direction WD and the diameter of the through hole 63 in the depth direction DP. A magnetic core body 61 is provided in the third extension 135 at a position approximately at the center of the depth direction DP. The position in the third extension 135 at the approximately center of the depth direction DP passes through the through hole 63.

[0065] In the first embodiment, the third extension 135 extends in one direction along the depth direction DP. However, the third extension 135 may not extend in one direction along the depth direction DP. For example, as... Figure 7 As shown, the third extension 135 can also bend along the width direction WD while extending along the depth direction DP. Although not shown in the figure, the third extension 135 can also bend along the thickness direction TD while extending along the depth direction DP. In this case, the width occupied by the third extension 135 in the width direction WD is also smaller than the diameter of the through hole 63 in the width direction. The width occupied by the third extension 135 in the thickness direction TD is also smaller than the diameter of the through hole 63 in the thickness direction TD.

[0066] <N-side busbar>

[0067] The N-side busbar 140 has a fourth extension 143, a fifth extension 144, and a sixth extension 145. The fourth extension 143 and the sixth extension 145 are arranged separately in the width direction WD. The fourth extension 143 is located further forward in the width direction than the sixth extension 145, closer to the front WD-. The sixth extension 145 is located further in the width direction than the fourth extension 143, closer to the inside DP+.

[0068] The fourth extension 143 and the sixth extension 145 extend along the depth direction DP. The fourth extension 143 is located further forward of the sixth extension 145 in the depth direction, near the front DP-. The sixth extension 145 is located further forward of the fourth extension 143 in the depth direction, near the inner DP+. A first terminal 141 on the N side is provided at the end of the fourth extension 143 near the front DP- in the depth direction. A second terminal 142 on the N side is provided at the end of the sixth extension 145 on the inner DP+ in the depth direction.

[0069] A fifth extension 144 is provided to connect the end of the fourth extension 143 opposite to the first terminal 141 on the N side and the end of the sixth extension 145 opposite to the second terminal 142 on the N side. The fifth extension 144 is sometimes referred to as a connecting portion. In the depth direction DP, the fifth extension 144 is provided between the fourth extension 143 and the sixth extension 145. In the width direction WD, the fifth extension 144 is provided between the fourth extension 143 and the sixth extension 145. When viewed from the thickness direction TD, the fifth extension 144 extends along the width direction WD. The angle formed by the fourth extension 143 and the fifth extension 144 is a right angle or approximately a right angle. The angle formed by the sixth extension 145 and the fifth extension 144 is a right angle or approximately a right angle. When viewed from the thickness direction TD, the N-side busbar 140 has a crank shape.

[0070] The fifth extension 144 has three consecutive extension pieces 144A, 144B, and 144C. These three extension pieces 144A, 144B, and 144C are sometimes referred to as the N-side first extension piece 144A, the N-side second extension piece 144B, and the N-side third extension piece 144C. The N-side first extension piece 144A is connected to the end of the fourth extension 143 opposite to the N-side first terminal 141. The N-side first extension piece 144A extends from the fourth extension 143 toward the sixth extension 145 and along the width direction WD.

[0071] Furthermore, the position of the fourth extension 143 in the thickness direction TD is different from the position of the sixth extension 145 in the thickness direction TD. An N-side third extension piece 144C is connected to the end of the sixth extension 145 opposite to the N-side second terminal 142. The N-side third extension piece 144C extends from the sixth extension 145 toward the fourth extension 143 and along the width direction WD.

[0072] Furthermore, an N-side second extension piece 144B is provided to connect the N-side first extension piece 144A and the N-side third extension piece 144C. The N-side second extension piece 144B extends along the thickness direction TD. The N-side first extension piece 144A, N-side second extension piece 144B, and N-side third extension piece 144C are continuous. The N-side first extension piece 144A, N-side second extension piece 144B, and N-side third extension piece 144C form a stepped shape of one level. The fourth extension portion 143 and the N-side first extension piece 144A are provided on the lower level side. The sixth extension portion 145 and the N-side third extension piece 144C are provided on the upper level side. The N-side second extension piece 144B is provided to connect the upper level and the lower level.

[0073] As described above, the magnetic core body 61 has a through hole 63 extending through the depth direction DP on the inner side of the ring. A fourth extension 143 passes through the through hole 63. The width occupies by the fourth extension 143 in the width direction WD is smaller than the diameter of the through hole 63 in the width direction. The width occupies by the fourth extension 143 in the thickness direction TD is smaller than the diameter of the through hole 63 in the thickness direction TD. A fifth extension 144 is included within the projection area of ​​the magnetic core 60 in the depth direction DP.

[0074] The width occupied by the fourth extension 143 in the width direction WD is equal to the distance between the point DP+ closest to the innermost side in the width direction and the point WD- closest to the front side in the width direction. Sometimes, the width occupied by the fourth extension 143 in the width direction WD is also referred to as the size of the fourth extension 143 in the width direction WD. The width occupied by the fourth extension 143 in the thickness direction TD is equal to the distance between the point TD+ closest to the uppermost side in the thickness direction and the point TD- closest to the lowermost side in the thickness direction. Sometimes, the width occupied by the fourth extension 143 in the thickness direction TD is also referred to as the size of the fourth extension 143 in the thickness direction TD.

[0075] In the first embodiment, the fourth extension 143 extends in one direction along the depth direction DP. However, the fourth extension 143 may not extend in one direction along the depth direction DP. For example, the fourth extension 143 may extend in the depth direction DP while bending in the width direction WD. The fourth extension 143 may also extend in the depth direction DP while bending in the thickness direction TD. In this case, the width occupied by the fourth extension 143 in the width direction WD is smaller than the diameter in the width direction of the through hole 63. The width occupied by the fourth extension 143 in the thickness direction TD is smaller than the diameter in the thickness direction TD of the through hole 63.

[0076] Furthermore, the length of the depth direction DP in the fourth extension 143 is longer than the length of the depth direction DP of the through hole 63. The length of the depth direction DP in the fourth extension 143 is longer than the width direction WD and the diameter of the depth direction DP of the through hole 63. A magnetic core body 61 is provided at a position approximately at the center of the depth direction DP in the fourth extension 143. The position approximately at the center of the depth direction DP in the fourth extension 143 passes through the through hole 63.

[0077] In the first embodiment, the fourth extension 143 extends in one direction along the depth direction DP. However, the fourth extension 143 may not extend in one direction along the depth direction DP. For example, the fourth extension 143 may extend in the depth direction DP while bending in the width direction WD. The fourth extension 143 may also extend in the depth direction DP while bending in the thickness direction TD. In this case, the width occupied by the fourth extension 143 in the width direction WD is smaller than the diameter in the width direction of the through hole 63. The width occupied by the fourth extension 143 in the thickness direction TD is smaller than the diameter in the thickness direction TD of the through hole 63.

[0078] <P-side busbar and N-side busbar>

[0079] An imaginary axis AX extends along the depth direction DP, passing through the center points of the first terminals 131, 141 and the second terminals 132, 142, and along the width direction WD. The component obtained by rotating the P-side busbar 130 180° around the imaginary axis AX is the N-side busbar 140. In other words, the component obtained by flipping the P-side busbar 130 is the N-side busbar 140. The P-side busbar 130 and the N-side busbar 140 have the same shape and are in a flipped-over relationship. The first extension 133 of the P-side busbar 130 and the sixth extension 145 of the N-side busbar 140 have the same shape. The second extension 134 of the P-side busbar 130 and the fifth extension 144 of the N-side busbar 140 have the same shape. The third extension 135 of the P-side busbar 130 and the fourth extension 143 of the N-side busbar 140 have the same shape.

[0080] A third extension 135 is provided in the P-side busbar 130 at a position near the front WD- in the width direction. A first extension 133 is provided in the P-side busbar 130 at a position near the inner WD+ in the width direction. A fourth extension 143 is provided in the N-side busbar 140 at a position near the front WD- in the width direction. A sixth extension 145 is provided in the N-side busbar 140 at a position near the inner WD+ in the width direction. The third extension 135 and the fourth extension 143 overlap in the thickness direction TD. The third extension 135 is located further up in the thickness direction TD+ than the fourth extension 143. The thickness direction TD position of the first extension 132 is equal to the thickness direction TD position of the fourth extension 143. The first extension 133 and the fourth extension 143 are separated in the width direction WD by a distance greater than or equal to that required to maintain insulation. The first extension 133 and the fourth extension 143 overlap in the width direction WD. The position of the thickness direction TD of the third extension 135 is equal to the position of the thickness direction TD of the sixth extension 145. The third extension 135 and the sixth extension 145 are separated in the width direction WD by a distance greater than or equal to that required to maintain insulation. The third extension 135 and the sixth extension 145 overlap in the width direction WD.

[0081] The second extension 134 extends in a stepped manner from the inner side WD+ in the width direction toward the near front side WD- in the width direction, rising one step from the lower side TD- in the thickness direction toward the upper side TD+ in the thickness direction. The P-side second extension 134B overlaps with the fourth extension 143 in the width direction WD. The P-side second extension 134B is positioned further inward in the width direction WD+ than the fourth extension 143. The P-side third extension 134C overlaps with the fourth extension 143 in the thickness direction TD. The P-side third extension 134C is positioned further inward in the thickness direction TD+ than the fourth extension 143.

[0082] Similarly, from the front side WD- in the width direction toward the inner side WD+ in the width direction, the fifth extension 144 extends in a stepped manner, rising one level from the lower side TD- in the thickness direction toward the upper side TD+ in the thickness direction. The first extension piece 144A on the N side overlaps with the third extension 135 in the thickness direction TD. The second extension piece 144B on the N side overlaps with the third extension 135 in the width direction WD. The first extension piece 144A on the N side is positioned further down the thickness direction TD- than the third extension 135.

[0083] Furthermore, the first extension piece 134A on the P side and the third extension piece 144C on the N side are separately disposed in the depth direction DP. The separation distance between the first extension piece 134A on the P side and the third extension piece 144C on the N side is greater than the thickness of the magnetic core body 61 in the depth direction DP. The magnetic core body 61 is disposed between the first extension piece 134A on the P side and the third extension piece 144C on the N side. The third extension portion 135 and the fourth extension portion 143 pass through the through hole 63 of the magnetic core body 61. The magnetic core body 61 extends in a ring shape around the depth direction DP, surrounding the third extension portion 135 and the fourth extension portion 143. An engaging portion 62 is disposed on the outer periphery of the inner side WD+ in the width direction of the magnetic core body 61. The engaging portion 62 extends inward in the width direction WD+ away from the magnetic core body 61.

[0084] The P-side busbar 130, N-side busbar 140, magnetic core 60, and Y-capacitor 30 are fixed to the base 70. The base 70 is, for example, fixed to a frame that houses the power module. The base 70 has a first terminal fixing part 71, a magnetic core fixing part 72, a second terminal fixing part 73, a Y-capacitor fixing part 74, and a base 75. The base 75 is a plate-like shape with a thinner thickness in the thickness direction TD. The first terminal fixing part 71, the magnetic core fixing part 72, the second terminal fixing part 73, and the Y-capacitor fixing part 74 protrude from the base 75 toward the thickness direction upwards TD+. Sometimes the first terminal fixing part 71 is referred to as the first fixing part. Sometimes the second terminal fixing part 73 is referred to as the second fixing part.

[0085] The first terminal fixing part 71 is a fixed part for fixing the P-side first terminal 131 and the N-side first terminal 141. Holes for fastening members 80, which fix the P-side first terminal 131 and the N-side first terminal 141, are formed in the first terminal fixing part 71. The P-side first terminal 131 and the N-side first terminal 141 are fixed to the first terminal fixing part 71 via the fastening members 80. The distance between the two holes is equal to the separation distance between the first extension 133 and the fourth extension 143. Furthermore, since the first extension 133 and the fourth extension 143 are the parts connected to the battery 2, which corresponds to the first electrical component, they are sometimes referred to as the first electrical connection part.

[0086] The magnetic body fixing part 72 houses a portion of the magnetic body core body 61 and is fixed by the engaging part 62. The magnetic body fixing part 72 has a housing part 72A that houses the portion of the magnetic body core body 61 located on its thickness-direction downward side TD-side, and a fixed part 72B for fixing by the engaging part 62. A hole is formed in the fixed part 72B for the fastening member 80 of the engaging part 62 to pass through. The engaging part 62 is fixed to the fixed part 72B via the fastening member 80. The engaging part 62 is fixed to the fixed part 72B via the fastening member 80 in the region where the projection area of ​​the second extension 134 in the depth direction DP overlaps with the projection area of ​​the fifth extension 144 in the depth direction DP.

[0087] The second terminal fixing part 73 has a P-side second terminal fixing part 73A and an N-side second terminal fixing part 73B. The P-side second terminal fixing part 73A is the fixed part for fixing the P-side second terminal 132. Sometimes the P-side second terminal fixing part 73A is referred to as the first busbar side second fixing part. A hole is formed in the P-side second terminal fixing part 73A for a fastening member 80 for fixing the P-side second terminal 132 to pass through. The P-side second terminal 132 is fixed to the P-side second terminal fixing part 73A via the fastening member 80.

[0088] The N-side second terminal fixing part 73B is a fixed part for fixing the N-side second terminal 142. The N-side second terminal fixing part 73B is sometimes referred to as the second busbar side second fixing part. A hole is formed in the N-side second terminal fixing part 73B for the fastening member 80 for fixing the N-side second terminal 142 to pass through. The N-side second terminal 142 is fixed to the N-side second terminal fixing part 73B via the fastening member 80. Furthermore, since the third extension part 135 and the sixth extension part 145 are the parts connected to the Y capacitor 30, which corresponds to the second electrical component, they are sometimes referred to as second electrical connection parts.

[0089] A hole is formed in the Y capacitor fixing part 74 for the fastening member 80 for fixing the N-side second terminal fixing part 73B to pass through. The N-side second terminal 142 is fixed to the N-side second terminal fixing part 73B via the fastening member 80. The P-side second terminal fixing part 73A and the N-side second terminal fixing part 73B are separately arranged in the width direction WD. The distance between the P-side second terminal fixing part 73A and the N-side second terminal fixing part 73B is equal to the separation distance between the third extension part 135 and the sixth extension part 145. The Y capacitor fixing part 74 is configured to overlap with the N-side second terminal fixing part 73B in the depth direction DP.

[0090] The Y capacitor fixing part 74 is a fixed part for fixing the Y capacitor 30. A hole is formed in the Y capacitor fixing part 74 for the fastening member 80 for fixing the Y capacitor 30 to pass through. The Y capacitor 30 is fixed to the Y capacitor fixing part 74 via the fastening member 80.

[0091] Four fixing parts 71-74 are arranged from the front side DP- in the depth direction toward the inner side DP+ in the depth direction, in the order of first terminal fixing part 71, magnetic body fixing part 72, second terminal fixing part 73, and Y capacitor fixing part 74. The first terminal fixing part 71 and the magnetic body fixing part 72 are arranged to be approximately the width of the second extension 134 apart in the depth direction DP. The magnetic body fixing part 72 and the second terminal fixing part 73 are arranged to be approximately the width of the fifth extension 144 apart in the depth direction DP. Furthermore, the position of the thickness direction TD of the upper end face of the first terminal fixing part 71 is different from the position of the thickness direction TD of the upper end face of the second terminal fixing part 73. The position of the thickness direction TD of the upper end face of the first terminal fixing part 71 is such that the first extension 133 and the fourth extension 143 can be fixed. The position of the thickness direction TD of the upper end face of the second terminal fixing part 73 is such that the third extension 135 and the sixth extension 145 can be fixed. The upper surface of the first terminal fixing part 71 is located at a position TD- further downward in the thickness direction than the upper surface of the second terminal fixing part 73. The upper surface of the second terminal fixing part 73 is located at a position TD+ further upward in the thickness direction than the upper surface of the first terminal fixing part 71.

[0092] The third extension 135 of the P-side busbar 130 passes through the through hole 63 of the magnetic core body 61. The second extension 134 passes between the first terminal fixing part 71 and the magnetic body fixing part 72. The second extension 134 overlaps with the magnetic core body 61 in the depth direction DP. The P-side first terminal 131 is fixed to the first terminal fixing part 71. The P-side second terminal 132 is fixed to the P-side second terminal fixing part 73A.

[0093] The fourth extension 143 of the N-side busbar 140 passes through the through hole 63 of the magnetic core body 61. The fifth extension 144 passes between the magnetic fixing part 72 and the second terminal fixing part 73. The fifth extension 144 overlaps with the magnetic core body 61 in the depth direction DP. The N-side first terminal 141 is fixed to the first terminal fixing part 71. The N-side second terminal 142 is fixed to the N-side second terminal fixing part 73B.

[0094] The Y capacitor 30 is arranged adjacent to the Y capacitor mounting portion 74 in the width direction WD. In addition to capacitor elements 31 and 32, capacitor buses 41 and 42, and ground bus 50, the Y capacitor 30 also has a capacitor housing 33. The capacitor housing 33 has a housing portion 34 for housing them and a locking portion 35 for fixing to the Y capacitor mounting portion 74. The locking portion 35 is fixed to the Y capacitor mounting portion 74 via a fastening member 80.

[0095] A portion of capacitor buses 41 and 42 and a portion of grounding bus 50 are exposed near the front DP- of the depth direction of the housing 34. The P-side first bus terminal 41A, the N-side first bus terminal 42A, and the grounding terminal 51 are exposed from the housing 34. The P-side first bus terminal 41A and the N-side first bus terminal 42A are separately arranged in the width direction WD. The P-side first bus terminal 41A is positioned further forward in the width direction than the N-side first bus terminal 42A. A grounding terminal 51 is provided between the P-side first bus terminal 41A and the N-side first bus terminal 42A in the width direction WD.

[0096] The second terminal 132 on the P side and the first busbar terminal 41A on the P side are fastened together to the second terminal fixing part 73A on the P side by fastening member 80. The second terminal 132 on the P side and the first busbar terminal 41A on the P side are electrically and mechanically connected by fastening member 80. The second terminal 142 on the N side and the first busbar terminal 42A on the N side are fastened together to the second terminal fixing part 73B on the N side. The second terminal 142 on the N side and the second terminal fixing part 73B on the N side are electrically and mechanically connected.

[0097] Additionally, a grounding terminal fixing part 52 is provided in the base 75 between the P-side second terminal fixing part 73A and the N-side second terminal fixing part 73B, which can be connected to the vehicle body grounding member via the fastening member 80. The grounding terminal 51 is electrically and mechanically connected to the grounding terminal fixing part 52 via the fastening member 80. The P-side capacitor element 31 and the N-side capacitor element 32 are electrically connected to the grounding member.

[0098] Additionally, fastening members 81, 82, and 83 for mounting the base 70 to the power module's frame, etc., are installed on the base 75. Fastening member 81 is located in the region where the projection area of ​​the second extension 134 in the width direction WD overlaps with the projection area of ​​the magnetic core body 61 in the depth direction DP. Fastening member 82 is located in the region where the projection area of ​​the third extension 135 in the depth direction DP overlaps with the projection area of ​​the Y capacitor 30 in the width direction WD. Fastening member 83 is located in the region where the projection areas of the magnetic core body 61 and the fifth extension 144 in the width direction WD overlap with the projection area of ​​the engaging portion 35 in the depth direction DP.

[0099] In addition, fastening members 81, 82, 83 and fastening part 80 are sometimes referred to separately. Fastening members 81, 82, 83 are sometimes called the first fastening member. Fastening part 80 is sometimes called the second fastening member.

[0100] <Manufacturing Method of Filter Device>

[0101] Next, the manufacturing method of the filter device 90 will be described. First, a base 70 is prepared. Next, a magnetic core body 61 is disposed in the receiving portion 72A of the magnetic body fixing portion 72. Next, a fourth extension 143 is inserted into the through hole 63 from the inner side DP+ in the depth direction toward the near front side DP- in the depth direction. Next, a third extension 135 is inserted into the through hole 63 from the near front side DP- in the depth direction toward the inner side DP+ in the depth direction. The third extension 135 is inserted into the through hole 63 along the depth direction DP so that the third extension 135 and the fourth extension 143 overlap in the thickness direction above TD+.

[0102] Furthermore, the insertion order of the fourth extension 143 and the third extension 135 into the through hole 63 is not limited to this. The third extension 135 may also be inserted into the through hole 63 before the fourth extension 143. In this case, the fourth extension 143 is inserted into the through hole 63 along the depth direction DP, so that the fourth extension 143 overlaps with the third extension 135 at the lower side TD- in the thickness direction.

[0103] Next, the Y capacitor 30 is fixed to the Y capacitor fixing part 74. The Y capacitor 30 is fixed to the Y capacitor fixing part 74 such that the first bus terminals 41A and 42A overlap with the second terminals 132 and 142 in the thickness direction TD, and the ground terminal 51 overlaps with the ground terminal fixing part 52 in the thickness direction TD. The corresponding first bus terminals 41A and 42A and the second terminals 132 and 142 are fixed by the fastening member 80. The ground terminal 51 is fixed to the ground terminal fixing part 52 by the fastening member 80. Then, the base 70 is fixed to the frame of the power module, etc., by the fastening members 81, 82, and 83.

[0104] <Effects>

[0105] The filter device 90 is electrically connected to the battery 2 and the Y capacitor 30. The battery 2 and the Y capacitor 30 are arranged in the depth direction DP. The filter device 90 is disposed between the battery 2 and the Y capacitor 30 in the depth direction DP. The filter device 90 has a magnetic core 60 and busbars 130 and 140. The magnetic core body 61 of the magnetic core 60 is formed into a ring around an axis along the depth direction DP. A through hole 63 is formed through the ring-shaped magnetic core body 61 in the depth direction DP. The busbar 130 has a first extension 133, a second extension 134, and a third extension 135. The N-side busbar 140 has a fourth extension 143, a fifth extension 144, and a sixth extension 145.

[0106] The first extension 133 and the fourth extension 143 are connected to the battery 2 and extend DP in the depth direction. The third extension 135 and the sixth extension 145 are connected to the Y capacitor 30 and extend DP in the depth direction. The second extension 134 connects the first extension 133 and the third extension 135. The fifth extension 144 connects the fourth extension 143 and the sixth extension 145. The third extension 135 in the P-side busbar 130 passes through the through hole 63. The fourth extension 143 in the N-side busbar 140 passes through the through hole 63.

[0107] The width WD of the third extension 135 or the fourth extension 143 passing through the through hole 63 is smaller than the diameter of the through hole 63 in the width direction. The width TD of the third extension 135 or the fourth extension 143 passing through the through hole 63 in the thickness direction is smaller than the diameter of the through hole 63 in the thickness direction. The third extension 135 or the fourth extension 143 passing through the through hole 63 is disposed in the projection area of ​​the magnetic core 60 in the depth direction DP. As a result, the size of the busbars 130 and 140 is easily suppressed, and the filter device 90 can be miniaturized.

[0108] Furthermore, during manufacturing, the third extension 135 or the fourth extension 143 is inserted into the through hole 63 along the depth direction DP. As described above, the width occupied by the third extension 135 or the fourth extension 143 in the width direction WD and the thickness direction TD is larger than the diameter of the through hole 63 in the width direction WD and the thickness direction TD. Therefore, the third extension 135 or the fourth extension 143 can smoothly pass through the through hole 63 without being twisted by the assembler. This provides a filter device 90 that is easy to assemble.

[0109] Furthermore, when viewed from the thickness direction TD, the second extension 134 and the fifth extension 144 extend in the width direction WD. The first extension 133 is approximately perpendicular to the second extension 134, and the second extension 134 is approximately perpendicular to the third extension 135. The fourth extension 143 is approximately perpendicular to the fifth extension 144, and the fifth extension 144 is approximately perpendicular to the sixth extension 145. Compared to the case where the angles between corresponding extensions are not approximately right angles but are connected in a curved manner, the increase in size of the busbars 130 and 140 in the depth direction DP can be suppressed. In addition, the second extension 134 and the fifth extension 144 are included in the projection area of ​​the magnetic core portion 60 in the depth direction DP. The increase in size of the busbars 130 and 140 in the width direction WD can be suppressed. The increase in size of the filter device 90 can be suppressed.

[0110] Busbars 130 and 140 have a P-side busbar 130 and an N-side busbar 140. A third extension 135 of the P-side busbar 130 and a fourth extension 143 of the N-side busbar 140 pass through the through hole 63. The third extension 135 and the fourth extension 143 overlap in the thickness direction TD. Therefore, compared with a configuration where the third extension 135 and the fourth extension 143 do not overlap in the thickness direction TD, a magnetic core 60 with a smaller diameter in the width direction WD of the through hole 63 can be used. This enables miniaturization of the filter device 90.

[0111] The P-side busbar 130 and the N-side busbar 140 are arranged such that the third extension 135 of the P-side busbar 130 and the fourth extension 143 of the N-side busbar 140 overlap in the thickness direction TD. The P-side first terminal 131 of the first extension 133 and the N-side first terminal 141 of the fourth extension 143 overlap in the width direction WD. The P-side second terminal 132 of the third extension 135 and the N-side second terminal 142 of the sixth extension 145 overlap in the width direction WD. The N-side busbar 140 has the same shape as the P-side busbar 130 after rotating it 180 degrees around the imaginary axis AX. Since the P-side busbar 130 and the N-side busbar 140 are in a front-to-back relationship, the design of the P-side busbar 130 and the N-side busbar 140 can be made common. Since the third extension 135 and the fourth extension 143 overlap in the thickness direction TD and the terminals overlap in the width direction WD, the increase in the occupied volume of the busbars 130 and 140 can be suppressed.

[0112] The second extension 134 has a stepped shape that rises one step from the lower side TD- in the thickness direction to the upper side TD+ in the thickness direction. The base 70 has a first terminal fixing part 71 that fixes the P-side first terminal 131 of the first extension 133 to the N-side first terminal 141 of the fourth extension 143.

[0113] Furthermore, the base 70 has a second terminal fixing part 73 that fixes the P-side second terminal 132 in the third extension 135 to the N-side second terminal 142 in the sixth extension 145. The position of the thickness direction TD of the first extension 133 is equal to the position of the thickness direction TD of the fourth extension 143. The position of the thickness direction TD of the third extension 135 is equal to the position of the thickness direction TD of the sixth extension 145. Therefore, since the positions of the P-side first terminal 131 and the N-side first terminal 141 in the thickness direction TD are equal, the P-side first terminal 131 and the N-side first terminal 141 can be easily fixed to the first terminal fixing part 71. Since the positions of the P-side second terminal 132 and the N-side second terminal 142 in the thickness direction TD are equal, the P-side second terminal 132 and the N-side second terminal 142 can be easily fixed to the second terminal fixing part 73. This improves the assemblability of the busbars 130, 140 and the base 70.

[0114] The Y-capacitor 30 includes capacitor elements 31 and 32, a P-side Y-capacitor bus 41, an N-side Y-capacitor bus 42, and a ground bus 50. The P-side Y-capacitor bus 41 has a P-side first bus terminal 41A connected to the P-side second terminal 132 of the third extension 135. The N-side Y-capacitor bus 42 has an N-side first bus terminal 42A connected to the N-side second terminal 142 of the sixth extension 145. The ground bus 50 connects the capacitor elements 31 and 32 to a grounding element. Furthermore, the ground bus 50 has a ground terminal 51 at an end different from the end connected to the capacitor elements 31 and 32, which is connected to a grounding element.

[0115] The second terminal fixing part 73 has a P-side second terminal fixing part 73A and an N-side second terminal fixing part 73B. Additionally, the base 70 has a grounding terminal fixing part 52 for fixing the grounding terminal 51 between the P-side second terminal fixing part 73A and the N-side second terminal fixing part 73B. The P-side second terminal fixing part 73A and the N-side second terminal fixing part 73B are spaced at a distance sufficient to maintain insulation between the P-side second terminal 132 and the N-side second terminal 142. The gap between the P-side second terminal fixing part 73A and the N-side second terminal fixing part 73B is a necessary design gap.

[0116] A grounding terminal fixing part 52 is provided in this gap. Therefore, the gap will not become a dead space. Since the dead space can be effectively utilized, it is not necessary to ensure a part for fixing the grounding terminal 51 in a location other than this gap in the base 70. As a result, the size of the filter device 90 can be suppressed.

[0117] The filter device 90 has multiple fastening members 80 for mounting the base 70 externally. Additionally, the base 70 has a magnetic core fixing part 72 for fixing the magnetic core 60 and a Y capacitor fixing part 74 for fixing the Y capacitor 30. A first projection area is defined as the projection region of the magnetic core 60, busbars 130, 140, and Y capacitor 30 in one of the width direction WD and depth direction DP. A second projection area is defined as the projection region of the magnetic core 60, busbars 130, 140, and Y capacitor 30 in the other of the width direction WD and depth direction DP. At least a portion of the fastening members 81, 82, 83 is provided in the area where the first and second projection areas overlap. Therefore, it is not necessary to ensure portions for fixing the fastening members 81, 82, 83 to the base 70 in spaces outside the areas described above. Thus, it is possible to suppress the increase in the size of the filter device 90.

[0118] The second extension 134 and the fifth extension 144 are separated in the depth direction DP. A fastening member 80 for fixing the magnetic core 60 to the magnetic fixing part 72 is provided in the region where the projection area of ​​the second extension 134 in the depth direction DP overlaps with the projection area of ​​the fifth extension 144 in the depth direction DP. The gap between the second extension 134 and the fifth extension 144 is a necessary gap by design. The magnetic fixing part 72 is provided in this gap. Therefore, the gap does not become a dead space. Since the dead space can be effectively utilized, it is not necessary to ensure space for fixing the magnetic fixing part 72 in a location other than this gap in the base 70.

[0119] (Other implementation methods)

[0120] Figure 8 This is a top view illustrating a variation of busbars 130 and 140. Figure 9 This is a perspective view illustrating a modified example of the configuration of the magnetic core 60 and the busbars 130 and 140. Figure 10 This is a perspective view illustrating a modified example of the configuration of the magnetic core 60 and the busbars 130 and 140.

[0121] In the first embodiment, it is described that the P-side busbar 130 and the N-side busbar 140 have the same shape and are in a reversible relationship. However, the P-side busbar 130 and the N-side busbar 140 may not have the same shape. The shapes of a portion of the P-side busbar 130 and the N-side busbar 140 may also be different. As an example, it may be formed such that at least a portion of the P-side first terminal 131 and the N-side second terminal 142 overlap in the depth direction DP, such that the length of the fifth extension 144 in the width direction WD is longer than the length of the second extension 134 in the width direction.

[0122] In the first embodiment, it was described that the third extension 135 and the fourth extension 143 overlap along the thickness direction TD while passing through the through hole 63. However, the third extension 135 and the fourth extension 143 may not necessarily overlap along the thickness direction TD while passing through the through hole 63. As an example, the third extension 135 and the fourth extension 143 may also overlap along the width direction WD while passing through the through hole 63. Figure 9 As shown, it is also possible for the main surfaces of the third extension 135 and the fourth extension 143 to overlap along the width direction WD while passing through the through hole 63. Figure 10 As shown, it is also possible to pass through the through hole 63 while the side of the third extension 135 and the side of the fourth extension 143 overlap along the width direction WD.

[0123] Furthermore, in the first embodiment, the method in which both the third extension 135 of the P-side busbar 130 and the fourth extension 143 of the N-side busbar 140 pass through the through hole 63 was described. However, it is also possible that only one of the P-side busbar 130 or the N-side busbar 140 passes through the through hole 63. When only the P-side busbar 130 passes through the through hole 63, the third extension 135 passes through the through hole 63. When only the N-side busbar 140 passes through the through hole 63, the fourth extension 143 passes through the through hole 63.

[0124] While this disclosure has been described based on embodiments, it should be understood that this disclosure is not limited to that implementation or structure. This disclosure also includes various modifications and equivalent variations. Furthermore, various combinations, methods, and further, combinations and methods involving only a single element, or more than or less thereof, also fall within the scope and spirit of this disclosure.

[0125] (The disclosure of technical ideas)

[0126] This specification discloses several technical ideas described in the following list of items. Some items are sometimes described by selectively referencing a multiple dependent form of a previous item in a subsequent item. Some items are sometimes described by referring to a multiple dependent form of another multiple dependent form. These items described in multiple dependent forms define several technical ideas.

[0127] (Technical Idea 1)

[0128] A filter device (90) is connected to a first electrical component (2) and a second electrical component (30), and is disposed between the first electrical component and the second electrical component in an arrangement direction (DP).

[0129] The above-mentioned filter device includes:

[0130] An annular magnetic core (60) having a through hole (63) extending along the aforementioned arrangement direction; and

[0131] Busbars (130, 140) electrically connect the first electrical component and the second electrical component, and extend through the through-hole.

[0132] The aforementioned busbars include:

[0133] The first electrical connection portion (133, 143) is connected to the first electrical component and extends along the arrangement direction;

[0134] The second electrical connection portion (135, 145) is disposed at a position offset from the first electrical connection portion in a width direction orthogonal to the arrangement direction and its own thickness direction (TD), connects to the second electrical component, and extends in the arrangement direction; and

[0135] The connecting parts (134, 144) connect the first electrical connection part and the second electrical connection part in the aforementioned arrangement direction.

[0136] The first electrical connection portion or the second electrical connection portion passes through the through hole.

[0137] The width occupied in the width direction of the first electrical connection portion or the second electrical connection portion passing through the through hole is smaller than the diameter in the width direction of the through hole.

[0138] The width of the first electrical connection portion or the second electrical connection portion passing through the through hole in the thickness direction is smaller than the diameter of the through hole in the thickness direction.

[0139] (Technical Idea 2)

[0140] As described in technical concept 1, the filter device, wherein,

[0141] When viewed from the thickness direction, the connecting portion extends along the width direction.

[0142] (Technical Idea 3)

[0143] The filter device described in technical concept 1 or 2, wherein,

[0144] The connecting portion is included in the projection area of ​​the aforementioned arrangement direction of the aforementioned magnetic core.

[0145] (Technical Idea 4)

[0146] The filter device described in any of technical ideas 1 to 3, wherein,

[0147] Including the two busbars mentioned above,

[0148] The first busbar (130), which is one of the two busbars mentioned above, has: a first extension (133) as the first electrical connection portion; a second extension (134) as the connection portion; and a third extension (135) as the second electrical connection portion.

[0149] The second busbar (140), which is the remaining one of the two busbars mentioned above, has: a fourth extension (143) as the first electrical connection; a fifth extension (144) as the connection; and a sixth extension (145) as the second electrical connection.

[0150] The aforementioned third extension and the aforementioned fourth extension pass through the aforementioned through hole.

[0151] The third extension and the fourth extension overlap in the thickness direction or the width direction.

[0152] (Technical Idea 5)

[0153] As described in technical concept 4, the filter device, in which,

[0154] The first busbar and the second busbar are arranged such that the third extension and the fourth extension overlap in the thickness direction.

[0155] The first extension and the fourth extension overlap in the width direction.

[0156] The aforementioned third extension and the aforementioned sixth extension overlap in the aforementioned width direction.

[0157] (Technical Idea 6)

[0158] The filter device described in technical concept 4 or 5, wherein,

[0159] It also includes a base (70), which has a first fixing part (71) and a second fixing part (73). The first fixing part fixes the first extension part and the fourth extension part, and the second fixing part fixes the third extension part and the sixth extension part.

[0160] The second and fifth extensions have a stepped shape, such that the position of the first extension in the thickness direction is equal to the position of the fourth extension in the thickness direction, and the position of the third extension in the thickness direction is equal to the position of the sixth extension in the thickness direction.

[0161] (Technical Idea 7)

[0162] As described in technical concept 6, the filter device, in which,

[0163] The second electrical component mentioned above is a Y capacitor.

[0164] The aforementioned Y capacitor includes: capacitor elements (31, 32); a first capacitor busbar (41) connected to the capacitor elements and the third extension; a second capacitor busbar (42) connected to the capacitor elements and the sixth extension; and a grounding busbar (50) connecting the capacitor elements to a grounding member.

[0165] The second fixing part has: a first busbar side second fixing part (73A) that fixes the third extension part and the first capacitor busbar; and a second busbar side second fixing part (73B) that fixes the sixth extension part and the second capacitor busbar.

[0166] The grounding busbar is connected at the location between the second fixing part on the first busbar side and the second fixing part on the second busbar side in the base.

[0167] (Technical Idea 8)

[0168] The filter device described in any of technical ideas 4 to 7, wherein,

[0169] The base also includes: a magnetic fixing part (72) for fixing the magnetic core; and a Y capacitor fixing part (74) for fixing the Y capacitor.

[0170] In the region where the projection area of ​​the arrangement direction or the width direction of one of the magnetic core, the first busbar, the second busbar, and the Y capacitor overlaps with the projection area of ​​the arrangement direction or the width direction of the other of the magnetic core, the first busbar, the second busbar, and the Y capacitor, at least a portion of a fastening member (81, 82, 83) for mounting the base externally is provided.

[0171] (Technical Idea 9)

[0172] As described in Technical Concept 8, the filter device, in which,

[0173] The second extension and the fifth extension are separated in the aforementioned arrangement direction.

[0174] In the region where the projection area of ​​the second extension in the above-mentioned arrangement direction overlaps with the projection area of ​​the fifth extension in the above-mentioned arrangement direction, a second fastening member (80), which is different from the first fastening member that serves as the fastening member, is provided for fixing the magnetic core to the magnetic fixing part.

Claims

1. A filter device, The filter device (90) is connected to the first electrical component (2) and the second electrical component (30), and is positioned between the first electrical component and the second electrical component in the arrangement direction (DP) of the first electrical component and the second electrical component. The filter device includes: A ring-shaped magnetic core (60) having a through hole (63) extending along the arrangement direction. as well as Busbars (130, 140), which electrically connect the first electrical component and the second electrical component, and extend through the through-hole. The busbar includes: A first electrical connection portion (133, 143) is connected to the first electrical component and extends along the arrangement direction; The second electrical connection portion (135, 145) is disposed at a position offset from the first electrical connection portion in a width direction (WD) orthogonal to the arrangement direction and its own thickness direction (TD), is connected to the second electrical component, and extends in the arrangement direction; as well as Connecting portions (134, 144) connect the first electrical connection portion and the second electrical connection portion in the arrangement direction. The first electrical connection or the second electrical connection passes through the through hole. The width occupied in the width direction of the first electrical connection portion or the second electrical connection portion passing through the through hole is smaller than the diameter in the width direction of the through hole. The width of the first or second electrical connection portion passing through the through hole in the thickness direction is smaller than the diameter of the through hole in the thickness direction.

2. The filter device as described in claim 1, characterized in that, When viewed from the thickness direction, the connecting portion extends along the width direction.

3. The filter device as described in claim 2, characterized in that, The connecting portion is included in the projection area of ​​the arrangement direction of the magnetic core.

4. The filter device according to any one of claims 1 to 3, characterized in that, Includes the two busbars mentioned above. The first busbar (130), which is one of the two busbars, has: a first extension (133) as the first electrical connection; a second extension (134) as the connection; and a third extension (135) as the second electrical connection. The second busbar (140), which is the remaining one of the two busbars, has: a fourth extension (143) as the first electrical connection; a fifth extension (144) as the connection; and a sixth extension (145) as the second electrical connection. The third extension and the fourth extension pass through the through hole. The third extension and the fourth extension overlap in the thickness direction or the width direction.

5. The filter device as described in claim 4, characterized in that, The first busbar and the second busbar are arranged such that the third extension and the fourth extension overlap in the thickness direction. The first extension and the fourth extension overlap in the width direction. The third extension and the sixth extension overlap in the width direction.

6. The filter device as described in claim 5, characterized in that, It also includes a base (70) having a first fixing part (71) and a second fixing part (73), the first fixing part fixing the first extension part and the fourth extension part, and the second fixing part fixing the third extension part and the sixth extension part. The second extension and the fifth extension have a stepped shape such that the position of the first extension in the thickness direction is equal to the position of the fourth extension in the thickness direction, and the position of the third extension in the thickness direction is equal to the position of the sixth extension in the thickness direction.

7. The filter device as claimed in claim 6, characterized in that, The second electrical component is a Y capacitor. The Y capacitor includes: capacitor elements (31, 32); a first capacitor bus (41) connected to the capacitor elements and the third extension; a second capacitor bus (42) connected to the capacitor elements and the sixth extension; and a grounding bus (50) connecting the capacitor elements to a grounding element. The second fixing part has: a first busbar-side second fixing part (73A) that fixes the third extension part and the first capacitor busbar; and a second busbar-side second fixing part (73B) that fixes the sixth extension part and the second capacitor busbar. The grounding busbar is connected at the location between the second fixing part on the first busbar side and the second fixing part on the second busbar side in the base.

8. The filter device as claimed in claim 7, characterized in that, The base further includes: a magnetic body fixing part (72) for fixing the magnetic core; and a Y capacitor fixing part (74) for fixing the Y capacitor. In the region where the projection area of ​​the arrangement direction or the width direction of one of the magnetic core, the first busbar, the second busbar, and the Y capacitor overlaps with the projection area of ​​the arrangement direction or the width direction of the other of the magnetic core, the first busbar, the second busbar, and the Y capacitor, at least a portion of a fastening member (81, 82, 83) for mounting the base externally is provided.

9. The filter device as claimed in claim 8, characterized in that, The second extension and the fifth extension are separated in the arrangement direction. In the region where the projection area of ​​the second extension in the arrangement direction overlaps with the projection area of ​​the fifth extension in the arrangement direction, a second fastening member (80), different from the first fastening member that serves as the fastening member, is provided for fixing the magnetic core to the magnetic fixing part.

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