Filter Device

Abstract

To provide a miniaturized filter device.SOLUTION: A filter device includes: an annular magnetic core 60 having a through hole 63 penetrating in an arrangement direction of a first electric component and a second electric component; and bus bars 130, 140 extending so as to pass through the through hole. The bus bar includes first electric connection portions 133, 143, second electric connection portions 135, 145, and coupling portions 134, 144. The first electric connection portion or the second electric connection portion passes through the through hole, and an occupied width in a width direction of the first electric connection portion or the second electric connection portion passing through the through hole is smaller than a diameter in a width direction of the through hole. The occupied width in a thickness direction of the first electrical connection portion or the second electric connection portion passing through the through hole is smaller than a diameter in the thickness direction of the through hole.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The disclosure provided herein relates to a filter device. [Background technology]

[0002] The busbar unit described in Patent Document 1 includes a magnetic core and a busbar. The magnetic core is annularly shaped with a through hole. The busbar includes a main body portion, an intersection portion, and a folded portion. The main body portion is disposed within the through hole. The intersection portion is folded in a direction intersecting the axial direction on one side of the through hole in the axial direction, outside the through hole. The folded portion extends to the other side in the axial direction, outside the magnetic core. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6417600 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, the end of the main body is provided with a tip portion connected to a power control unit. The end of the folded portion is provided with a tip portion connected to each phase terminal of a rotating electric machine. A busbar unit is provided between the power control unit and the rotating electric machine. The direction in which the power control unit and the rotating electric machine are arranged is perpendicular to the axial direction of the through hole. The busbar extends between the two tip portions so as to follow the inner surface, lower surface, and outer surface of the magnetic core. Therefore, in Patent Document 1, the size of the busbar tends to increase in the direction in which the intersection extends, raising concerns about the busbar unit becoming large.

[0005] An object of the present disclosure is to provide a miniaturized filter device. [Means for solving the problem]

[0006] A filter device according to one aspect of the present disclosure comprises: A filter device (90) electrically connected to a first electric component (2) and a second electric component (30) and disposed between the first electric component and the second electric component in an arrangement direction (DP) in which the first electric component and the second electric component are arranged, an annular magnetic core (60) having a through hole (63) penetrating in the alignment direction; bus bars (130, 140) electrically connecting the first electrical component and the second electrical component and extending through the through holes; The busbar is a first electrical connection portion (133, 143) connected to the first electrical component and extending in the arrangement direction; second electrical connection portions (135, 145) that are provided at positions offset from the first electrical connection portions in a width direction (WD) perpendicular to the arrangement direction and the thickness direction (TD) of the first electrical connection portion, are connected to a second electrical component, and extend in the arrangement direction; a connecting portion (134, 144) that connects the first electrical connection portion and the second electrical connection portion in the arrangement direction, the first electrical connection portion or the second electrical connection portion passes through the through hole; the width of the first electrical connection portion or the second electrical connection portion passing through the through hole in the width direction is smaller than the diameter of the through hole in the width direction; The width in the thickness 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 thickness direction of the through hole.

[0007] The first electrical connection portions (133, 143) or the second electrical connection portions (135, 145) passing through the through holes (63) are arranged within a projected area in the arrangement direction (DP) of the magnetic cores (60). This makes it easier to reduce the size of the bus bars (130, 140) in the width direction (WD), thereby enabling the filter device (90) to be made smaller.

[0008] The reference numbers in parentheses above merely indicate the corresponding relationship with the configurations described in the embodiments below, and do not in any way limit the technical scope. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is an electrical circuit diagram of the electrical component. [Figure 2] FIG. [Figure 3] FIG. 2 is a plan view of the filter device. [Figure 4] 4 is a plan view of the filter device as seen from the IV side shown in FIG. 3. FIG. [Figure 5] 4 is a plan view of the filter device as seen from the V side shown in FIG. 3. FIG. [Figure 6] FIG. 4 is a plan view of the filter device as seen from the VI side shown in FIG. 3. [Figure 7] FIG. 10 is a plan view illustrating a modified example of the bus bar. [Figure 8] FIG. 10 is a plan view illustrating a modified example of the bus bar. [Figure 9] 10A and 10B are perspective views illustrating modified examples of the arrangement of the magnetic core and the bus bar. [Figure 10] 10A and 10B are perspective views illustrating modified examples of the arrangement of the magnetic core and the bus bar. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, several embodiments for carrying out the present disclosure will be described with reference to the drawings. In each embodiment, parts corresponding to matters described in the preceding embodiment will be assigned the same reference numerals, and duplicated explanations may be omitted. In each embodiment, when only a part of the configuration is described, the other previously described embodiments may be applied to the other parts of the configuration.

[0011] In addition, it is not only possible to combine parts that are explicitly stated as being possible in each embodiment, but it is also possible to partially combine embodiments, embodiments and variants, and variants even if not explicitly stated, as long as there are no particular problems with the combination.

[0012] (First embodiment) <In-vehicle systems> 1 is an electrical circuit diagram of an electrical component 10 mounted on an in-vehicle system 1. The in-vehicle system 1 is equipped with a battery 2, a motor generator 4, and the electrical component 10. The vehicle on which the in-vehicle system 1 is mounted is a hybrid vehicle that can run by switching between and / or combining the driving force of the engine and the driving force of the motor generator 4. The engine and the motor generator 4 are interconnected via a gear device.

[0013] The electrical component 10 includes 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 bar 150. The P-side wiring 110 is a conductive member connected to the positive electrode of the battery 2. The N-side wiring 120 is a conductive member connected to the negative electrode of the battery 2. The connecting bus bar 150 is a conductive member that connects the inverter 11 and the motor generator 4.

[0014] The inverter 11 is connected to a P-side wiring 110 and an N-side wiring 120. The inverter 11 has a plurality of semiconductor modules 12. Each semiconductor module 12 has two switching elements 13 and two diodes 13A. The two switching elements 13 are connected in series between the P-side wiring 110 and the N-side wiring 120.

[0015] A P-side input terminal 11A connected to a P-side wiring 110 is connected to the collector electrode of one of the two switching elements 13 that is provided on the high potential side. An N-side input terminal 11B connected to an N-side wiring 120 is connected to the emitter of one of the two switching elements 13 that is provided 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.

[0016] A motor terminal 11C connected to the motor generator 4 is connected to the emitter of the high-potential side switching element 13 and the collector of the N-side switching element 13. The multiple switching elements 13 convert DC power supplied from the battery 2 into AC power that can drive the motor generator 4. The converted power is supplied to the motor generator 4 via a connecting bus bar 150.

[0017] The control circuit board 15 controls the on / off of the multiple switching elements 13. A control circuit that controls the on / off of the multiple switching elements 13 is mounted on the control circuit board 15. Connection terminals 11D of the multiple switching elements 13 are solder-connected to the control circuit board 15. Connection terminals 11D of the multiple switching elements 13 are electrically connected to the control circuit board 15.

[0018] Smoothing capacitor 20 mainly smoothes the DC voltage supplied from battery 2. Smoothing capacitor 20 is connected to P-side wiring 110 and N-side wiring 120. Smoothing capacitor 20 is connected in parallel to inverter 11. P-side wiring 110 and N-side wiring 120 electrically connect inverter 11, smoothing capacitor 20, and battery 2 together.

[0019] The filter device 90 has a magnetic core 60, a base 70, fastening members 80, 81, 82, and 83, a P-side bus bar 130, and an N-side bus bar 140. The P-side bus bar 130 is part of the P-side wiring 110. The P-side bus bar 130 may be referred to as a first bus bar. The N-side bus bar 140 is part of the N-side wiring 120. The N-side bus bar 140 may be referred to as a second bus bar. The P-side bus bar 130 and the N-side bus bar 140 may be collectively referred to as the PN bus bars 130 and 140. The PN bus bars 130 and 140 are provided with a magnetic core 60.

[0020] The magnetic core 60 includes a magnetic core body 61 and an engaging portion 62. The magnetic core body 61 is formed in an annular shape. A through-hole 63 that penetrates in one direction is defined by the annular magnetic core body 61. The P-side bus bar 130 and the N-side bus bar 140 are passed through the through-hole 63. The magnetic core 60 can remove noise components caused by the current flowing through the PN bus bars 130 and 140. For this reason, a device including the magnetic core 60 is sometimes referred to as a filter device 90. The magnetic core body 61 is mainly made of ferrite, electromagnetic steel sheet, amorphous, etc. The magnetic material is sealed with an insulating member. The magnetic core body 61 is formed by sealing the magnetic material with an insulating member.

[0021] The engaging portion 62 is provided on the outer periphery of the magnetic core body 61. The engaging portion 62 extends away from the magnetic core body 61 in a direction perpendicular to the one direction. The engaging portion 62 is a locking portion for attaching the magnetic core body 61 to the base 70. The engaging portion 62 is attached to the base 70 by a fastening member 80, thereby fixing the magnetic core body 61 to the base 70.

[0022] The Y capacitor 30 mainly removes noise components leaking from the inverter 11. The Y capacitor 30 has two capacitor elements 31 and 32, two Y capacitor bus bars 41 and 42, and a ground bus bar 50. Of the two capacitor elements 31 and 32, the one provided on the P-side wiring 110 side may be referred to as the P-side capacitor element 31. Of the two capacitor elements 31 and 32, the one provided on the N-side wiring 120 side may be referred to as the N-side capacitor element 32.

[0023] Of the two Y capacitor bus bars 41, 42, the one connected to the P-side capacitor element 31 may be referred to as the P-side Y capacitor bus bar 41. The P-side Y capacitor bus bar 41 may be referred to as the first capacitor bus bar. The P-side Y capacitor bus bar 41 has a P-side first bus bar terminal 41A connected to the P-side capacitor element 31 and a P-side second bus bar 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 bar 41.

[0024] Of the two Y capacitor bus bars 41, 42, the one connected to the N-side capacitor element 32 may be referred to as the N-side Y capacitor bus bar 42. The N-side Y capacitor bus bar 42 may be referred to as the second capacitor bus bar. The N-side Y capacitor bus bar 42 has an N-side first bus bar terminal 42A connected to the N-side capacitor element 32, and an N-side second bus bar 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 bar 42.

[0025] The ground bus bar 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 ground connection terminal 53 connected to the ground via the base 70. The ground bus bar 50 extends so as to connect the P-side GND terminal, the N-side GND terminal, and the ground terminal 51. The ground bus bar 50 is connected to the capacitor elements 31 and 32 and is also electrically connected to the ground.

[0026] The ground bus bar 50 is electrically connected to a body ground such as a chassis via the base 70. The capacitor elements 31 and 32 remove noise components leaking from the inverter 11 by directing the noise components leaking from the inverter 11 to the body ground via the ground bus bar 50. The capacitor elements 31 and 32 can also remove noise components flowing through the PN bus bars 130 and 140, in addition to the noise components leaking from the inverter 11.

[0027] FIG. 2 is an exploded perspective view of the filter device 90. FIG. 3 is a plan view of the filter device 90. FIG. 4 is a plan view of the filter device 90 as viewed from the IV side shown in FIG. 3. FIG. 5 is a plan view of the filter device 90 as viewed from the V side shown in FIG. 3. FIG. 6 is a plan view of the filter device 90 as viewed from the VI side shown in FIG. 3. FIG. 7 is a plan view for explaining a modification example of the bus bars 130 and 140. The thickness direction of the PN bus bars 130 and 140 may be referred to as the thickness direction TD. A direction orthogonal to the thickness direction TD may be referred to as the depth direction DP. A direction orthogonal to the thickness direction TD and the depth direction DP may be referred to as the width direction WD. The thickness direction TD, the depth direction DP, and the width direction WD are three mutually orthogonal directions.

[0028] The PN bus bars 130 and 140 electrically connect the battery 2 and the Y capacitor 30. The PN bus bars 130 and 140 extend along the depth direction DP while being partially bent in the width direction WD. The PN bus bars 130 and 140 have a one-step stepped shape. The battery 2 and the Y capacitor 30 are arranged side by side in the depth direction DP. With respect to the depth direction DP, which is the arrangement direction in which the battery 2 and the Y capacitor 30 are arranged side by side, the PN bus bars 130 and 140 are provided between the battery 2 and the Y capacitor 30. Incidentally, the battery 2 may be referred to as the first electrical component. The Y capacitor 30 may be referred to as the second electrical component.

[0029] First terminals 131 and 141 connected to the battery 2 are provided at one end of the PN bus bars 130 and 140 in the depth direction DP. Second terminals 132 and 142 connected to the Y capacitor 30 are provided at the other end of the PN bus bars 130 and 140 in the depth direction DP. The first terminal of the P-side bus bar 130 may be referred to as the P-side first terminal 131. The second terminal of the P-side bus bar 130 may be referred to as the P-side second terminal 132.

[0030] <P-side bus bar> P-side bus bar 130 has a first extension portion 133, a second extension portion 134, and a third extension portion 135. First extension portion 133 and third extension portion 135 are spaced apart in the width direction WD. First extension portion 133 is located on the rear side WD+ in the width direction relative to third extension portion 135. Third extension portion 135 is located on the front side WD- in the width direction relative to first extension portion 133.

[0031] The first extension 133 and the third extension 135 extend along the depth direction DP. The first extension 133 is provided on the near side DP- in the depth direction relative to the third extension 135. The third extension 135 is provided on the far side DP+ in the depth direction relative to the first extension 133. A P-side first terminal 131 is provided at the end of the first extension 133 on the near side DP- in the depth direction. A P-side second terminal 132 is provided at the end of the third extension 135 on the far side DP+ in the depth direction.

[0032] Second extension portion 134 is provided to connect the end of first extension portion 133 opposite P-side first terminal 131 to the end of third extension portion 135 opposite P-side second terminal 132. Second extension portion 134 is sometimes referred to as a connecting portion. With respect to the depth direction DP, second extension portion 133 is provided between first extension portion 133 and third extension portion 135. With respect to the width direction WD, second extension portion 133 is provided between first extension portion 133 and third extension portion 135. When viewed from the thickness direction TD, second extension portion 134 extends along the width direction WD. The angle formed between first extension portion 133 and second extension portion 134 is a right angle or a nearly right angle. The angle formed between third extension portion 135 and second extension portion 134 is a right angle or a nearly right angle. When viewed from the thickness direction TD, P-side busbar 130 has a crank shape.

[0033] The second extension portion 134 has three continuous extension pieces 134A, 134B, and 134C. The three extension pieces 134A, 134B, and 134C may be referred to as a P-side first extension piece 134A, a P-side second extension piece 134B, and a P-side third extension piece 134C. The P-side first extension piece 134A is continuous with the end of the first extension portion 133 opposite to the P-side first terminal 131. The P-side first extension piece 134A extends in the width direction WD from the first extension portion 133 toward the third extension portion 135.

[0034] Furthermore, the position of first extension portion 133 in thickness direction TD is different from the position of third extension portion 135 in thickness direction TD. P-side third extension piece 134C is continuous with the end of third extension portion 135 opposite P-side second terminal 132. P-side third extension piece 134C extends from third extension portion 135 toward first extension portion 133 in the width direction WD.

[0035] The P-side second extension piece 134B is provided to connect the P-side first extension piece 134A and the P-side third extension piece 134C. The P-side second extension piece 134B extends along the thickness direction TD. The P-side first extension piece 134A, the P-side second extension piece 134B, and the P-side third extension piece 134C are continuous. The P-side first extension piece 134A, the P-side second extension piece 134B, and the P-side third extension piece 134C form a one-step shape. The lower side TD- in the thickness direction of the step shape may be referred to as the lower step. The upper side TD+ in the thickness direction of the step shape may be referred to as the upper step. The first extension portion 133 and the P-side first extension piece 134A are provided on the lower step side. The third extension portion 135 and the P-side third extension piece 134C are provided on the upper step side. A P-side second extension piece 134B is provided to connect the upper and lower stages.

[0036] The magnetic core body 61 has an annular shape that forms a ring around the depth direction DP. The magnetic core body 61 has a through hole 63 that penetrates the ring in the depth direction DP inside the ring. A third extension portion 135 passes through the through hole 63. The occupied width of the third extension portion 135 in the width direction WD is smaller than the diameter of the through hole 63 in the width direction. The occupied width of the third extension portion 135 in the thickness direction TD is smaller than the diameter of the through hole 63 in the thickness direction TD. In addition, the second extension portion 134 is included within the projected area of ​​the magnetic core 60 in the depth direction DP.

[0037] The width of the third extension 135 in the width direction WD is equal to the distance between the point at the farthest rear side in the width direction DP+ and the point at the farthest front side in the width direction WD-. The width of 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 of the third extension 135 in the thickness direction TD is also referred to as the distance between the point at the uppermost side in the thickness direction TD+ and the point at the lowermost side in the thickness direction TD-. The width of the third extension 135 in the thickness direction TD is also referred to as the size of the third extension 135 in the thickness direction TD.

[0038] The length of the third extension portion 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 portion 135 in the depth direction DP is longer than the width direction WD and the diameter of the through hole 63 in the depth direction DP. The magnetic core body 61 is provided in a portion of the third extension portion 135 that is located approximately in the center of the depth direction DP. The through hole 63 passes through the portion of the third extension portion 135 that is located approximately in the center of the depth direction DP.

[0039] In the first embodiment, the third extension portion 135 extends in one direction along the depth direction DP. However, the third extension portion 135 does not have to extend in one direction along the depth direction DP. For example, as shown in FIG. 7, the third extension portion 135 may extend in the depth direction DP while curving in the width direction WD. Although not shown, the third extension portion 135 may extend in the depth direction DP while curving in the thickness direction TD. Even in this case, the occupied width of the third extension portion 135 in the width direction WD is smaller than the diameter of the through hole 63 in the width direction. The occupied width of the third extension portion 135 in the thickness direction TD is smaller than the diameter of the through hole 63 in the thickness direction TD.

[0040] <N-side bus bar> The N-side bus bar 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 apart in the width direction WD. The fourth extension 143 is provided on the front side WD- in the width direction with respect to the sixth extension 145. The sixth extension 145 is provided on the rear side DP+ in the width direction with respect to the fourth extension 143.

[0041] The fourth extension 143 and the sixth extension 145 extend along the depth direction DP. The fourth extension 143 is provided on the front side DP- in the depth direction with respect to the sixth extension 145. The sixth extension 145 is provided on the rear side DP+ in the depth direction with respect to the fourth extension 143. An N-side first terminal 141 is provided at the front end DP- in the depth direction of the fourth extension 143. An N-side second terminal 142 is provided at the rear end DP+ in the depth direction of the sixth extension 145.

[0042] The fifth extension 144 is provided so as to connect the end of the fourth extension 143 opposite to the N-side first terminal 141 and the end of the sixth extension 145 opposite to the N-side second terminal 142. The fifth extension 144 may be 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​​​The fifth extension portion 144 has three continuous extension pieces 144A, 144B, and 144C. The three extension pieces 144A, 144B, and 144C may be referred to as the first N-side extension piece 144A, the second N-side extension piece 144B, and the third N-side extension piece 144C. The first N-side extension piece 144A is continuous with the end of the fourth extension portion 143 opposite the first N-side terminal 141. The first N-side extension piece 144A extends in the width direction WD from the fourth extension portion 143 toward the sixth extension portion 145.

[0044] Furthermore, the position of the fourth extension portion 143 in the thickness direction TD is different from the position of the sixth extension portion 145 in the thickness direction TD. The N-side third extension piece 144C is continuous with the end of the sixth extension portion 145 opposite to the N-side second terminal 142. The N-side third extension piece 144C extends from the sixth extension portion 145 toward the fourth extension portion 143 in the width direction WD.

[0045] The 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, the N-side second extension piece 144B, and the N-side third extension piece 144C are continuous. The N-side first extension piece 144A, the N-side second extension piece 144B, and the N-side third extension piece 144C form a one-stage stepped shape. The fourth extension portion 143 and the N-side first extension piece 144A are provided on the lower stage. The sixth extension portion 145 and the N-side third extension piece 144C are provided on the upper stage. The N-side second extension piece 144B is provided to connect the upper stage and the lower stage.

[0046] As described above, the magnetic core body 61 has a through hole 63 penetrating in the depth direction DP inside the ring. The fourth extension portion 143 passes through the through hole 63. The occupation width of the fourth extension portion 143 in the width direction WD is smaller than the diameter of the through hole 63 in the width direction. The occupation width of the fourth extension portion 143 in the thickness direction TD is smaller than the diameter of the through hole 63 in the thickness direction TD. The fifth extension portion 144 is included within the projection area of ​​the magnetic core 60 in the depth direction DP.

[0047] The width of the fourth extension 143 in the width direction WD is equal to the distance between the point at the farthest rear side in the width direction DP+ and the point at the farthest front side in the width direction WD-. The width of 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 of the fourth extension 143 in the thickness direction TD is also referred to as the distance between the point at the uppermost side in the thickness direction TD+ and the point at the lowermost side in the thickness direction TD-. The width of 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.

[0048] In the first embodiment, the fourth extension portion 143 extends in one direction along the depth direction DP. However, the fourth extension portion 143 does not have to extend in one direction along the depth direction DP. For example, the fourth extension portion 143 may extend in the depth direction DP while curving in the width direction WD. The fourth extension portion 143 may extend in the depth direction DP while curving in the thickness direction TD. Even in this case, the occupied width of the fourth extension portion 143 in the width direction WD is smaller than the diameter of the through hole 63 in the width direction. The occupied width of the fourth extension portion 143 in the thickness direction TD is smaller than the diameter of the through hole 63 in the thickness direction TD.

[0049] The length of the fourth extension portion 143 in the depth direction DP is longer than the length of the through hole 63 in the depth direction DP. The length of the fourth extension portion 143 in the depth direction DP is longer than the width direction WD and the diameter of the through hole 63 in the depth direction DP. The magnetic core body 61 is provided in a portion of the fourth extension portion 143 that is located approximately in the center of the depth direction DP. The through hole 63 passes through the portion of the fourth extension portion 143 that is located approximately in the center of the depth direction DP.

[0050] In the first embodiment, the fourth extension portion 143 extends in one direction along the depth direction DP. However, the fourth extension portion 143 may not extend in one direction along the depth direction DP. For example, the fourth extension portion 143 may extend in the depth direction DP while curving in the width direction WD. The fourth extension portion 143 may extend in the depth direction DP while curving in the thickness direction TD. Even in that case, the occupied width of the fourth extension portion 143 in the width direction WD is smaller than the diameter of the through hole 63 in the width direction. The occupied width of the fourth extension portion 143 in the thickness direction TD is smaller than the diameter of the through hole 63 in the thickness direction TD.

[0051] <P-side bus bar and N-side bus bar> Regarding the depth direction DP, an axis that passes through the center points of the first terminals 131 and 141 and the second terminals 132 and 142 and extends in the width direction WD is defined as the virtual axis AX. The N-side bus bar 140 is obtained by rotating the P-side bus bar 130 180° around the virtual axis AX. In other words, the N-side bus bar 140 is the reverse of the P-side bus bar 130. The P-side bus bar 130 and the N-side bus bar 140 have the same shape and are in a reverse relationship with each other. The first extension portion 133 in the P-side bus bar 130 and the sixth extension portion 145 in the N-side bus bar 140 have the same shape. The second extension portion 134 in the P-side bus bar 130 and the fifth extension portion 144 in the N-side bus bar 140 have the same shape. The third extension portion 135 in the P-side bus bar 130 and the fourth extension portion 143 in the N-side bus bar 140 have the same shape.

[0052] A third extension 135 is provided on the P-side bus bar 130 at its widthwise front side WD-. A first extension 133 is provided on the P-side bus bar 130 at its widthwise rear side WD+. A fourth extension 143 is provided on the N-side bus bar 140 at its widthwise front side WD-. A sixth extension 145 is provided on the N-side bus bar 140 at its widthwise rear side WD+. The third extension 135 and the fourth extension 143 overlap in the thickness direction TD. The third extension 135 is provided on the thicknesswise upper side TD+ than the fourth extension 143. The position of the first extension 132 in the thickness direction TD is equal to the position of the fourth extension 143 in the thickness direction TD. The first extension 133 and the fourth extension 143 are provided apart in the width direction WD by a distance sufficient to maintain insulation. The first extension 133 and the fourth extension 143 overlap in the width direction WD. The position of the third extension portion 135 in the thickness direction TD is the same as the position of the sixth extension portion 145 in the thickness direction TD. The third extension portion 135 and the sixth extension portion 145 are spaced apart in the width direction WD by a distance sufficient to maintain insulation. The third extension portion 135 and the sixth extension portion 145 overlap in the width direction WD.

[0053] The second extension portion 134 extends in a stepped manner from the rear side WD+ in the width direction toward the front side WD- in the width direction, rising one step from the lower side TD- in the thickness direction to the upper side TD+ in the thickness direction. The P-side second extension piece 134B overlaps with the fourth extension portion 143 in the width direction WD. The P-side second extension piece 134B is provided further toward the rear side WD+ in the width direction than the fourth extension portion 143. The P-side third extension piece 134C overlaps with the fourth extension portion 143 in the thickness direction TD. The P-side third extension piece 134C is provided further toward the upper side TD+ in the thickness direction than the fourth extension portion 143.

[0054] Similarly, the fifth extension portion 144 extends in a stepped manner from the front side WD- in the width direction to the rear side WD+ in the width direction, rising one step from the lower side TD- in the thickness direction to the upper side TD+ in the thickness direction. The N-side first extension piece 144A overlaps with the third extension portion 135 in the thickness direction TD. The N-side second extension piece 144B overlaps with the third extension portion 135 in the width direction WD. The N-side first extension piece 144A is located on the lower side TD- in the thickness direction than the third extension portion 135.

[0055] The P-side first extension piece 134A and the N-side third extension piece 144C are spaced apart in the depth direction DP. The distance between the P-side first extension piece 134A and the N-side third extension piece 144C is greater than the thickness of the magnetic core body 61 in the depth direction DP. The magnetic core body 61 is located between the P-side first extension piece 134A and the N-side third extension piece 144C. 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 annularly around the depth direction DP to surround the third extension portion 135 and the fourth extension portion 143. An engaging portion 62 is located on the outer periphery of the magnetic core body 61 on the widthwise rear side WD+. The engaging portion 62 extends toward the widthwise rear side WD+ so as to move away from the magnetic core body 61.

[0056] The P-side bus bar 130, the N-side bus bar 140, the magnetic core 60, and the Y capacitor 30 are fixed to a base 70. The base 70 is fixed to, for example, a housing that houses a power module. The base 70 has a first terminal fixing portion 71, a magnetic material fixing portion 72, a second terminal fixing portion 73, a Y capacitor fixing portion 74, and a base 75. The base 75 has a thin plate shape in the thickness direction TD. The first terminal fixing portion 71, the magnetic material fixing portion 72, the second terminal fixing portion 73, and the Y capacitor fixing portion 74 protrude from the base 75 upward in the thickness direction TD+. The first terminal fixing portion 71 may be referred to as a first fixing portion. The second terminal fixing portion 73 may be referred to as a second fixing portion.

[0057] The first terminal fixing portion 71 is a fixed portion to which the P-side first terminal 131 and the N-side first terminal 141 are fixed. Holes are individually formed in the first terminal fixing portion 71 for passing fastening members 80 that fix the P-side first terminal 131 and the N-side first terminal 141. The P-side first terminal 131 and the N-side first terminal 141 are fixed to the first terminal fixing portion 71 via the fastening members 80. The distance between the two holes is equal to the separation distance between the first extension portion 133 and the fourth extension portion 143. Note that the first extension portion 133 and the fourth extension portion 143 are sometimes referred to as first electrical connection portions because they are portions that are connected to the battery 2, which corresponds to the first electrical component.

[0058] The magnetic body fixing portion 72 accommodates a portion of the magnetic core body 61 and has the engaging portion 62 fixed thereto. The magnetic body fixing portion 72 has a housing portion 72A that accommodates a portion of the magnetic core body 61 on the lower TD- side in the thickness direction, and a fixed portion 72B to which the engaging portion 62 is fixed. A hole is formed in the fixed portion 72B for passing a fastening member 80 that fixes the engaging portion 62. The engaging portion 62 is fixed to the fixed portion 72B via the fastening member 80. The engaging portion 62 is fixed to the fixed portion 72B via the fastening member 80 in a region where a projected region of the second extension portion 134 in the depth direction DP and a projected region of the fifth extension portion 144 in the depth direction DP overlap.

[0059] The second terminal fixing portion 73 has a P-side second terminal fixing portion 73A and an N-side second terminal fixing portion 73B. The P-side second terminal fixing portion 73A is a fixed portion to which the P-side second terminal 132 is fixed. The P-side second terminal fixing portion 73A may be referred to as the first bus bar side second fixing portion. A hole is formed in the P-side second terminal fixing portion 73A for passing a fastening member 80 that fixes the P-side second terminal 132. The P-side second terminal 132 is fixed to the P-side second terminal fixing portion 73A via the fastening member 80.

[0060] The N-side second terminal fixing portion 73B is a fixed portion to which the N-side second terminal 142 is fixed. The N-side second terminal fixing portion 73B may be referred to as the second bus bar side second fixing portion. A hole is formed in the N-side second terminal fixing portion 73B for passing a fastening member 80 that fixes the N-side second terminal 142. The N-side second terminal 142 is fixed to the N-side second terminal fixing portion 73B via the fastening member 80. The third extension portion 135 and the sixth extension portion 145 are connected to the Y capacitor 30, which corresponds to the second electrical component, and may be referred to as the second electrical connection portion.

[0061] The Y capacitor fixing portion 74 has a hole for passing a fastening member 80 that fixes the N-side second terminal fixing portion 73B. The N-side second terminal 142 is fixed to the N-side second terminal fixing portion 73B via the fastening member 80. The P-side second terminal fixing portion 73A and the N-side second terminal fixing portion 73B are spaced apart in the width direction WD. The distance between the P-side second terminal fixing portion 73A and the N-side second terminal fixing portion 73B is equal to the separation distance between the third extension portion 135 and the sixth extension portion 145. The Y capacitor fixing portion 74 is arranged to overlap the N-side second terminal fixing portion 73B in the depth direction DP.

[0062] The Y capacitor fixing part 74 is a fixed part to which the Y capacitor 30 is fixed. A hole is formed in the Y capacitor fixing part 74 for passing a fastening member 80 that fixes the Y capacitor 30. The Y capacitor 30 is fixed to the Y capacitor fixing part 74 via the fastening member 80.

[0063] The four fixing portions 71 to 74 are arranged in the following order from the near side DP- in the depth direction to the far side DP+ in the depth direction: first terminal fixing portion 71, magnetic body fixing portion 72, second terminal fixing portion 73, and Y capacitor fixing portion 74. The first terminal fixing portion 71 and the magnetic body fixing portion 72 are spaced apart in the depth direction DP by approximately the width of the second extension portion 134. The magnetic body fixing portion 72 and the second terminal fixing portion 73 are spaced apart in the depth direction DP by approximately the width of the fifth extension portion 144. The position of the upper end surface of the first terminal fixing portion 71 in the thickness direction TD is different from the position of the upper end surface of the second terminal fixing portion 73 in the thickness direction TD. The position of the upper end surface of the first terminal fixing portion 71 in the thickness direction TD is a position where the first extension portion 133 and the fourth extension portion 143 can be fixed. The position of the upper end surface of the second terminal fixing portion 73 in the thickness direction TD is a position where the third extension portion 135 and the sixth extension portion 145 can be fixed. The upper end surface of the first terminal fixing portion 71 is provided on the lower side TD- in the thickness direction than the upper end surface of the second terminal fixing portion 73. The upper end surface of the second terminal fixing portion 73 is provided on the upper side TD+ in the thickness direction than the upper end surface of the first terminal fixing portion 71.

[0064] The third extension portion 135 of the P-side bus bar 130 is passed through the through-hole 63 of the magnetic core body 61. The second extension portion 134 is passed between the first terminal fixing portion 71 and the magnetic core body 61. The second extension portion 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 portion 71. The P-side second terminal 132 is fixed to the P-side second terminal fixing portion 73A.

[0065] The fourth extension portion 143 of the N-side bus bar 140 is passed through the through hole 63 of the magnetic core body 61. The fifth extension portion 144 is passed between the magnetic body fixing portion 72 and the second terminal fixing portion 73. The fifth extension portion 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 portion 71. The N-side second terminal 142 is fixed to the N-side second terminal fixing portion 73B.

[0066] Y capacitor 30 is disposed adjacent to Y capacitor fixing part 74 in the width direction WD. Y capacitor 30 has capacitor elements 31, 32, capacitor bus bars 41, 42, and ground bus bar 50, as well as a capacitor case 33. Capacitor case 33 has a storage section 34 that stores these elements, and an engaging section 35 that is fixed to Y capacitor fixing part 74. The engaging section 35 is fixed to Y capacitor fixing part 74 via fastening members 80.

[0067] Portions of the capacitor bus bars 41, 42 and a portion of the ground bus bar 50 are exposed from the front side DP- in the depth direction of the storage section 34. The P-side first bus bar terminal 41A, the N-side first bus bar terminal 42A, and the ground terminal 51 are exposed from the storage section 34. The P-side first bus bar terminal 41A and the N-side first bus bar terminal 42A are arranged apart in the width direction WD. The P-side first bus bar terminal 41A is provided closer to the front side WD- in the width direction than the N-side first bus bar terminal 42A. A ground terminal 51 is provided between the P-side first bus bar terminal 41A and the N-side first bus bar terminal 42A in the width direction WD.

[0068] The P-side second terminal 132 and the P-side first bus bar terminal 41A are fastened together to the P-side second terminal fixing portion 73A with fastening members 80. The P-side second terminal 132 and the P-side first bus bar terminal 41A are electrically and mechanically connected together with the fastening members 80. The N-side second terminal 142 and the N-side first bus bar terminal 42A are fastened together to the N-side second terminal fixing portion 73B. The N-side second terminal 142 and the N-side second terminal fixing portion 73B are electrically and mechanically connected together.

[0069] Furthermore, a ground terminal fixing portion 52 connectable to a body ground via a fastening member 80 is provided in a portion of the base 75 between the P-side second terminal fixing portion 73A and the N-side second terminal fixing portion 73B. A ground terminal 51 is electrically and mechanically connected to the ground terminal fixing portion 52 via the fastening member 80. The P-side capacitor element 31 and the N-side capacitor element 32 are electrically connected to the ground.

[0070] Furthermore, fastening members 81, 82, and 83 for attaching the base 70 to the housing of a power module or the like are attached to the base 75. The fastening member 81 is provided in a region where a projected area of ​​the second extension portion 134 in the width direction WD overlaps with a projected area of ​​the magnetic core body 61 in the depth direction DP. The fastening member 82 is provided in a region where a projected area of ​​the third extension portion 135 in the depth direction DP overlaps with a projected area of ​​the Y capacitor 30 in the width direction WD. The fastening member 83 is provided in a region where a projected area of ​​the magnetic core body 61 and the fifth extension portion 144 in the width direction WD overlaps with a projected area of ​​the engagement portion 35 in the depth direction DP.

[0071] The fastening members 81, 82, and 83 may be referred to separately from the fastening portion 80. The fastening members 81, 82, and 83 may be referred to as first fastening members. The fastening portion 80 may be referred to as a second fastening member.

[0072] <Method of manufacturing the filter device> Next, a manufacturing method of the filter device 90 will be described. First, the base 70 is prepared. Next, the magnetic core body 61 is placed in the storage section 72A of the magnetic body fixing section 72. Next, the fourth extension portion 143 is inserted into the through hole 63 along the depth direction DP from the rear side DP+ in the depth direction toward the front side DP- in the depth direction. Next, the third extension portion 135 is inserted into the through hole 63 along the depth direction DP from the front side DP- in the depth direction toward the rear side DP+ in the depth direction. The third extension portion 135 is inserted into the through hole 63 along the depth direction DP so that the third extension portion 135 overlaps the fourth extension portion 143 at the upper part TD+ in the thickness direction.

[0073] The order in which the fourth extension portion 143 and the third extension portion 135 are inserted into the through hole 63 is not limited to this. The third extension portion 135 may be inserted into the through hole 63 before the fourth extension portion 143. In this case, the fourth extension portion 143 is inserted into the through hole 63 along the depth direction DP so that the fourth extension portion 143 overlaps with the third extension portion 135 on the lower side TD- in the thickness direction.

[0074] Next, Y capacitor 30 is fixed to Y capacitor fixing portion 74. Y capacitor 30 is fixed to Y capacitor fixing portion 74 so that first bus bar terminals 41A, 42A overlap second terminals 132, 142 in the thickness direction TD, and ground terminal 51 overlaps ground terminal fixing portion 52 in the thickness direction TD. Corresponding first bus bar terminals 41A, 42A and second terminals 132, 142 are fixed with fastening members 80. Ground terminal 51 is fixed to ground terminal fixing portion 52 with fastening member 80. Then base 70 is fixed to a housing such as a power module with fastening members 81, 82, and 83.

[0075] <Action and effect> 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 aligned in the depth direction DP. The filter device 90 is provided between the battery 2 and the Y capacitor 30 in the depth direction DP. The filter device 90 has a magnetic core 60 and bus bars 130 and 140. The magnetic core body 61 of the magnetic core 60 is formed in an annular shape around an axis along the depth direction DP. The annular magnetic core body 61 defines a through hole 63 that penetrates in the depth direction DP. The bus bar 130 has a first extension portion 133, a second extension portion 134, and a third extension portion 135. The N-side bus bar 140 has a fourth extension portion 143, a fifth extension portion 144, and a sixth extension portion 145.

[0076] The first extension portion 133 and the fourth extension portion 143 are connected to the battery 2 and extend along the depth direction DP. The third extension portion 135 and the sixth extension portion 145 are connected to the Y capacitor 30 and extend along the depth direction DP. The second extension portion 134 connects the first extension portion 133 and the third extension portion 135. The fifth extension portion 144 connects the fourth extension portion 143 and the sixth extension portion 145. In the P-side bus bar 130, the third extension portion 135 passes through the through hole 63. In the N-side bus bar 140, the fourth extension portion 143 passes through the through hole 63.

[0077] The width in the width direction WD of the third extension portion 135 or the fourth extension portion 143 passing through the through hole 63 is smaller than the diameter in the width direction of the through hole 63. The width in the thickness direction TD of the third extension portion 135 or the fourth extension portion 143 passing through the through hole 63 is smaller than the diameter in the thickness direction TD of the through hole 63. The third extension portion 135 or the fourth extension portion 143 passing through the through hole 63 is arranged within a projected area in the depth direction DP of the magnetic core 60. This makes it easier to keep the size of the bus bars 130, 140 small, allowing the filter device 90 to be made more compact.

[0078] 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 of 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. This allows the assembler to smoothly pass the third extension 135 or the fourth extension 143 through the through hole 63 without twisting it. This makes it possible to provide a filter device 90 that is easy to assemble.

[0079] Furthermore, when viewed from the thickness direction TD, the second extension portion 134 and the fifth extension portion 144 extend in the width direction WD. The first extension portion 133 and the second extension portion 134, and the second extension portion 134 and the third extension portion 135 form a substantially right angle. The fourth extension portion 143 and the fifth extension portion 144, and the fifth extension portion 144 and the sixth extension portion 145 form a substantially right angle. Compared to when the angles between corresponding extension portions are not substantially right angles but are connected while curving, an increase in the size of the busbars 130, 140 in the depth direction DP is suppressed. Furthermore, the second extension portion 134 and the fifth extension portion 144 are included within the projection area of ​​the magnetic core 60 in the depth direction DP. An increase in the size of the busbars 130, 140 in the width direction WD is suppressed. An increase in the size of the filter device 90 is suppressed.

[0080] The bus bars 130, 140 include a P-side bus bar 130 and an N-side bus bar 140. A third extension portion 135 of the P-side bus bar 130 and a fourth extension portion 143 of the N-side bus bar 140 pass through the through hole 63. The third extension portion 135 and the fourth extension portion 143 overlap with each other in the thickness direction TD. This allows the use of a magnetic core 60 with a smaller diameter of the through hole 63 in the width direction WD compared to a configuration in which the third extension portion 135 and the fourth extension portion 143 do not overlap with each other in the thickness direction TD. The size of the filter device 90 can be reduced.

[0081] The P-side bus bar 130 and the N-side bus bar 140 are arranged such that the third extension portion 135 of the P-side bus bar 130 and the fourth extension portion 143 of the N-side bus bar 140 overlap in the thickness direction TD. The P-side first terminal 131 of the first extension portion 133 and the N-side first terminal 141 of the fourth extension portion 143 overlap in the width direction WD. The P-side second terminal 132 of the third extension portion 135 and the N-side second terminal 142 of the sixth extension portion 145 overlap in the width direction WD. The N-side bus bar 140 has the same shape as the P-side bus bar 130 rotated 180 degrees around the imaginary axis AX. Because the P-side bus bar 130 and the N-side bus bar 140 are reversed, the P-side bus bar 130 and the N-side bus bar 140 can have the same design. Third extension portion 135 and fourth extension portion 143 overlap in thickness direction TD, and the terminals overlap in width direction WD, so that an increase in the volume occupied by bus bars 130, 140 is suppressed.

[0082] 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 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 portion 71 that fixes the P-side first terminal 131 in the first extension 133 and the N-side first terminal 141 in the fourth extension 143.

[0083] The base 70 also has a second terminal fixing portion 73 that fixes the P-side second terminal 132 at the third extension portion 135 and the N-side second terminal 142 at the sixth extension portion 145. The position of the first extension portion 133 in the thickness direction TD is equal to the position of the fourth extension portion 143. The position of the third extension portion 135 in the thickness direction TD is equal to the position of the sixth extension portion 145 in the thickness direction TD. As a result, the P-side first terminal 131 and the N-side first terminal 141 are easily fixed to the first terminal fixing portion 71 because the positions of the P-side second terminal 132 and the N-side second terminal 142 are equal to the position of the P-side second terminal 132 and the N-side second terminal 142 in the thickness direction TD. This improves the ease of assembly of the busbars 130, 140 and the base 70.

[0084] The Y capacitor 30 includes capacitor elements 31 and 32, a P-side Y capacitor bus bar 41, an N-side Y capacitor bus bar 42, and a ground bus bar 50. The P-side Y capacitor bus bar 41 includes a P-side first bus bar terminal 41A connected to the P-side second terminal 132 of the third extension portion 135. The N-side Y capacitor bus bar 42 includes an N-side first bus bar terminal 42A connected to the N-side second terminal 142 of the sixth extension portion 145. The ground bus bar 50 connects the capacitor elements 31 and 32 to ground. The ground bus bar 50 also includes a ground terminal 51 connected to ground at an end other than the end connected to the capacitor elements 31 and 32.

[0085] The second terminal fixing portion 73 has a P-side second terminal fixing portion 73A and an N-side second terminal fixing portion 73B. The base 70 further has a ground terminal fixing portion 52 between the P-side second terminal fixing portion 73A and the N-side second terminal fixing portion 73B, which fixes the ground terminal 51. The P-side second terminal fixing portion 73A and the N-side second terminal fixing portion 73B are separated from each other by an amount that allows the P-side second terminal 132 and the N-side second terminal 142 to maintain insulation. The gap between the P-side second terminal fixing portion 73A and the N-side second terminal fixing portion 73B is a necessary gap in design.

[0086] The ground terminal fixing portion 52 is provided in this gap. This prevents the gap from becoming dead space. Because the dead space can be utilized, there is no need to provide a portion for fixing the ground terminal 51 in a portion of the base 70 other than this gap. This prevents the filter device 90 from becoming larger in size.

[0087] The filter device 90 has multiple fastening members 80 for attaching the base 70 to an external device. The base 70 further has a magnetic fixing portion 72 for fixing the magnetic core 60 and a Y capacitor fixing portion 74 for fixing the Y capacitor 30. A projection area of ​​one of the magnetic core 60, bus bars 130 and 140, and Y capacitor 30 in the width direction WD or depth direction DP is defined as a first projection area. A projection area of ​​another of the magnetic core 60, bus bars 130 and 140, and Y capacitor 30 in the width direction WD or depth direction DP is defined as a second projection area. At least a portion of the fastening members 81, 82, and 83 is provided in an area where the first projection area and the second projection area overlap. This eliminates the need to secure areas for fixing the fastening members 81, 82, and 83 to the base 70 in spaces other than those described above. This prevents the filter device 90 from becoming larger in size.

[0088] The second extension portion 134 and the fifth extension portion 144 are spaced apart in the depth direction DP. A fastening member 80 for fixing the magnetic material core 60 to the magnetic material fixing portion 72 is provided in the area where the projection area of ​​the second extension portion 134 in the depth direction DP and the projection area of ​​the fifth extension portion 144 in the depth direction DP overlap. The gap between the second extension portion 134 and the fifth extension portion 144 is a necessary gap in terms of design. The magnetic material fixing portion 72 is provided in this gap. This prevents the gap from becoming dead space. Because the dead space can be utilized, there is no need to secure space for fixing the magnetic material fixing portion 72 in any part of the base 70 other than this gap.

[0089] (Other embodiments) Fig. 8 is a plan view illustrating a modified example of the bus bars 130 and 140. Fig. 9 is a perspective view illustrating a modified example of the arrangement of the magnetic core 60 and the bus bars 130 and 140. Fig. 10 is a perspective view illustrating a modified example of the arrangement of the magnetic core 60 and the bus bars 130 and 140.

[0090] In the first embodiment, the P-side bus bar 130 and the N-side bus bar 140 have been described as having the same shape but are reversed relative to each other. However, the P-side bus bar 130 and the N-side bus bar 140 do not have to have the same shape. The P-side bus bar 130 and the N-side bus bar 140 may have partially different shapes. As an example, the P-side first terminal 131 and the N-side second terminal 142 may at least partially overlap in the depth direction DP, and the length of the fifth extension portion 144 in the width direction WD may be longer than the length of the second extension portion 134 in the width direction.

[0091] In the first embodiment, the third extension portion 135 and the fourth extension portion 143 are inserted through the through hole 63 while overlapping in the thickness direction TD. However, the third extension portion 135 and the fourth extension portion 143 do not have to be inserted through the through hole 63 while overlapping in the thickness direction TD. As an example, the third extension portion 135 and the fourth extension portion 143 may be inserted through the through hole 63 while overlapping in the width direction WD. As shown in FIG. 9 , the main surface of the third extension portion 135 and the main surface of the fourth extension portion 143 may be inserted through the through hole 63 while overlapping in the width direction WD. As shown in FIG. 10 , the side surface of the third extension portion 135 and the side surface of the fourth extension portion 143 may be inserted through the through hole 63 while overlapping in the width direction WD.

[0092] In the first embodiment, the third extension portion 135 of the P-side bus bar 130 and the fourth extension portion 143 of the N-side bus bar 140 are both inserted through the through hole 63. However, only one of the P-side bus bar 130 or the N-side bus bar 140 may be inserted through the through hole 63. When only the P-side bus bar 130 is inserted through the through hole 63, the third extension portion 135 is inserted through the through hole 63. When only the N-side bus bar 140 is inserted through the through hole 63, the fourth extension portion 143 is inserted through the through hole 63.

[0093] Although the present disclosure has been described with reference to examples, it is understood that the present disclosure is not limited to the embodiments or structures. The present disclosure also encompasses various modifications and modifications within the scope of equivalents. In addition, although various combinations and forms are shown in the present disclosure, other combinations and forms including only one element, more, or less than one element are also within the scope and spirit of the present disclosure.

[0094] (Disclosure of technical ideas) This specification discloses multiple technical ideas described in the following multiple clauses. Some clauses may be written in a multiple dependent form, with subsequent clauses alternatively referencing preceding clauses. Some clauses may be written in a multiple dependent form, with subsequent clauses alternatively referencing preceding clauses. These multiple dependent clauses define multiple technical ideas.

[0095] (Technical thought 1) A filter device (90) electrically connected to a first electric component (2) and a second electric component (30), and disposed between the first electric component and the second electric component in an arrangement direction (DP) in which the first electric component and the second electric component are arranged, an annular magnetic core (60) having a through hole (63) penetrating in the alignment direction; bus bars (130, 140) electrically connecting the first electrical component and the second electrical component and extending through the through holes; The bus bar is a first electrical connection portion (133, 143) connected to the first electrical component and extending in the arrangement direction; second electrical connection portions (135, 145) that are provided at positions offset from the first electrical connection portions in a width direction (WD) perpendicular to the alignment direction and the thickness direction (TD) of the first electrical connection portion, are connected to the second electrical component, and extend in the alignment direction; a connecting portion (134, 144) that connects the first electrical connection portion and the second electrical connection portion in the arrangement direction, the first electrical connection portion or the second electrical connection portion passes through the through hole; an occupation width in the width direction of the first electrical connection portion or the second electrical connection portion passing through the through hole is smaller than a diameter in the width direction of the through hole; A filter device in which 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.

[0096] (Technical thought 2) The filter device according to Technical Idea 1, wherein the connecting portion extends in the width direction when viewed in the thickness direction.

[0097] (Technical Thought 3) The filter device according to Technical Idea 1 or 2, wherein the connecting portion is included in a projected area of ​​the magnetic core in the arrangement direction.

[0098] (Technical Thought 4) Two of the bus bars are provided, A first bus bar (130) that is one of the two bus bars has a first extension portion (133) that is the first electrical connection portion, a second extension portion (134) that is the connecting portion, and a third extension portion (135) that is the second electrical connection portion, The second bus bar (140), which is the remaining one of the two bus bars, has a fourth extension portion (143) which is the first electrical connection portion, a fifth extension portion (144) which is the connecting portion, and a sixth extension portion (145) which is the second electrical connection portion, the third extension portion and the fourth extension portion pass through the through hole, The filter device according to any one of Technical Concepts 1 to 3, wherein the third extension portion and the fourth extension portion overlap with each other in the thickness direction or the width direction.

[0099] (Technical Thought 5) the first bus bar and the second bus bar are arranged such that the third extension portion and the fourth extension portion overlap with each other in the thickness direction; the first extension portion and the fourth extension portion overlap in the width direction, The filter device according to Technical Concept 4, wherein the third extension portion and the sixth extension portion overlap in the width direction.

[0100] (Technical Thought 6) The device further includes a base (70) having a first fixing portion (71) for fixing the first extension portion and the fourth extension portion, and a second fixing portion (73) for fixing the third extension portion and the sixth extension portion, A filter device described in Technical Idea 4 or 5, wherein the second extension portion and the fifth extension portion have a stepped shape so that the thickness-wise position of the first extension portion and the thickness-wise position of the fourth extension portion are equal, and the thickness-wise position of the third extension portion and the thickness-wise position of the sixth extension portion are equal.

[0101] (Technical Thought 7) the second electrical component is a Y capacitor; the Y capacitor includes capacitor elements (31, 32), a first capacitor bus bar (41) connected to the capacitor elements and the third extension portion, a second capacitor bus bar (42) connected to the capacitor elements and the sixth extension portion, and a ground bus bar (50) connecting the capacitor elements to ground, the second fixing portion has a first bus bar side second fixing portion (73A) that fixes the third extension portion and the first condenser bus bar, and a second bus bar side second fixing portion (73B) that fixes the sixth extension portion and the second condenser bus bar, The filter device according to Technical Idea 6, wherein the ground bus bar is connected to a portion of the base between the first bus bar side second fixing portion and the second bus bar side second fixing portion.

[0102] (Technical Thought 8) the base further includes a magnetic body fixing portion (72) that fixes the magnetic core, and a Y capacitor fixing portion (74) that fixes the Y capacitor, The filter device according to any one of Technical Ideas 4 to 7, wherein at least a portion of a fastening member (81, 82, 83) for attaching the base to the outside is provided in an area where a projection area in the arrangement direction or the width direction of one of the magnetic core, the first bus bar, the second bus bar, and the Y capacitor overlaps with a projection area in the arrangement direction or the width direction of another of the magnetic core, the first bus bar, the second bus bar, and the Y capacitor.

[0103] (Technical Thought 9) the second extension portion and the fifth extension portion are spaced apart in the arrangement direction, A filter device as described in Technical Idea 8, in which a second fastening member (80) for fixing the magnetic core to the magnetic fixing portion, which is different from the first fastening member, is provided in the area where the projection area of ​​the second extension portion in the alignment direction and the projection area of ​​the fifth extension portion in the alignment direction overlap. [Explanation of symbols]

[0104] 130 first bus bar, 133 first electrical connection portion, 133 first extension portion, 134 connection portion, 134 second extension portion, 135 third extension portion, 140 bus bar, 140 second bus bar, 143 first electrical connection portion, 143 fourth extension portion, 144 connection portion, 144 fifth extension portion, 145 sixth extension portion, 2 First electrical component, 30 Second electrical component, 31, 32 Capacitor element, 41 First capacitor bus bar, 42 Second capacitor bus bar, 50 Ground bus bar, 60 magnetic core, 63 through hole, 70 base, 71 first fixing portion, 72 magnetic fixing portion, 73 second fixing portion, 73A first bus bar side second fixing portion, 73B second bus bar side second fixing portion, 74 Y capacitor fixing portion, 80 second fastening member, 81, 82, 83 fastening members, 90 filter device, TD thickness direction, WD width direction, DP arrangement direction

Claims

1. A filter device (90) electrically connected to a first electrical component (2) and a second electrical component (30) and provided between the first electrical component and the second electrical component in an arrangement direction (DP) in which the first electrical component and the second electrical component are arranged, an annular magnetic core (60) having a through hole (63) penetrating in the alignment direction; a bus bar (130, 140) electrically connecting the first electrical component and the second electrical component and extending through the through hole; The bus bar is a first electrical connection portion (133, 143) connected to the first electrical component and extending in the arrangement direction; second electrical connection portions (135, 145) that are provided at positions offset from the first electrical connection portions in a width direction (WD) perpendicular to the alignment direction and the thickness direction (TD) of the second electrical connection portions, are connected to the second electrical component, and extend in the alignment direction; a connecting portion (134, 144) that connects the first electrical connection portion and the second electrical connection portion in the arrangement direction, the first electrical connection portion or the second electrical connection portion passes through the through hole; an occupation width in the width direction of the first electrical connection portion or the second electrical connection portion passing through the through hole is smaller than a diameter in the width direction of the through hole; A filter device in which 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.

2. The filter device according to claim 1 , wherein the connecting portion extends in the width direction when viewed in the thickness direction.

3. The filter device according to claim 2 , wherein the connecting portion is included in a projected area of ​​the magnetic core in the arrangement direction.

4. Two of the bus bars are provided, A first bus bar (130) that is one of the two bus bars has a first extension portion (133) that is the first electrical connection portion, a second extension portion (134) that is the connecting portion, and a third extension portion (135) that is the second electrical connection portion, The second bus bar (140), which is the remaining one of the two bus bars, has a fourth extension portion (143) which is the first electrical connection portion, a fifth extension portion (144) which is the connecting portion, and a sixth extension portion (145) which is the second electrical connection portion, the third extension portion and the fourth extension portion pass through the through hole, 4. The filter device according to claim 1, wherein the third extension portion and the fourth extension portion overlap with each other in the thickness direction or the width direction.

5. the first bus bar and the second bus bar are arranged such that the third extension portion and the fourth extension portion overlap with each other in the thickness direction; the first extension portion and the fourth extension portion overlap in the width direction, The filter device according to claim 4 , wherein the third extension portion and the sixth extension portion overlap in the width direction.

6. The device further includes a base (70) having a first fixing portion (71) for fixing the first extension portion and the fourth extension portion, and a second fixing portion (73) for fixing the third extension portion and the sixth extension portion, The filter device described in claim 5, wherein the second extension portion and the fifth extension portion have a stepped shape so that the thickness-wise position of the first extension portion is equal to the thickness-wise position of the fourth extension portion, and the thickness-wise position of the third extension portion is equal to the thickness-wise position of the sixth extension portion.

7. the second electrical component is a Y capacitor; The Y capacitor includes capacitor elements (31, 32), a first capacitor bus bar (41) connected to the capacitor elements and the third extension portion, a second capacitor bus bar (42) connected to the capacitor elements and the sixth extension portion, and a ground bus bar (50) connecting the capacitor elements to ground, the second fixing portion has a first bus bar side second fixing portion (73A) that fixes the third extension portion and the first capacitor bus bar, and a second bus bar side second fixing portion (73B) that fixes the sixth extension portion and the second capacitor bus bar, The filter device according to claim 6 , wherein the ground bus bar is connected to a portion of the base between the first bus bar side second fixing portion and the second bus bar side second fixing portion.

8. The base further includes a magnetic material fixing portion (72) that fixes the magnetic core, and a Y capacitor fixing portion (74) that fixes the Y capacitor, 8. The filter device according to claim 7, wherein at least a portion of a fastening member (81, 82, 83) for attaching the base to the outside is provided in an area where a projected area in the alignment direction or the width direction of one of the magnetic core, the first bus bar, the second bus bar, and the Y capacitor overlaps with a projected area in the alignment direction or the width direction of another of the magnetic core, the first bus bar, the second bus bar, and the Y capacitor.

9. the second extension portion and the fifth extension portion are spaced apart in the arrangement direction, A filter device as described in claim 8, wherein a second fastening member (80) for fixing the magnetic core to the magnetic fixing portion, which is different from the first fastening member, is provided in the area where the projection area of ​​the second extension portion in the alignment direction and the projection area of ​​the fifth extension portion in the alignment direction overlap.

Images