Bus bar module

Abstract

To provide a compactly configured bus bar module that reliably insulates multiple bus bars from one another.SOLUTION: A bus bar module 30 includes a plurality of stacked plate-shaped bus bars 31, 32, 33 and a resin portion 40 that covers at least some of the plurality of plate-shaped bus bars 31, 32, 33, and in a direction perpendicular to the stacking direction and the longitudinal direction, one sides of the plurality of plate-shaped bus bars 31, 32, 33 are covered and integrated by the resin portion 40, and the other sides are exposed and not covered by the resin portion 40.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a busbar module. [Background technology]

[0002] In recent years, automobiles equipped with motors as a driving source (such as hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), battery electric vehicles (BEVs), and fuel cell electric vehicles (FCEVs)) have become widespread. These automobiles are equipped with a vehicle drive system that drives the motor and other components, and this vehicle drive system is equipped with a power conversion device having a plurality of electronic components.

[0003] Patent Document 1, cited below, describes a busbar module used as a conductive path for an electric circuit mounted on such a power conversion device. In this busbar module, three plate-shaped busbars are stacked in an insulated state with resin portions disposed on opposing surfaces of each other, and the outer surfaces of the entire three plate-shaped busbars are coated with the resin portions to form an integrated structure. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-304874 Summary of the Invention [Problem to be solved by the invention]

[0005] In the busbar module of Patent Document 1, the resin portions ensure insulation between the busbars. However, it is necessary to secure a large number of resin portions between the busbars, and in addition, resin portions of a certain width are also required around the outer periphery of the busbars. This makes the busbar module prone to becoming large overall. Therefore, there is room for improvement in miniaturizing the busbar module.

[0006] Therefore, there is a demand for a bus bar module that is compact and reliably insulates a plurality of bus bars from one another. [Means for solving the problem]

[0007] One embodiment of the busbar module according to the present invention is a busbar module having a plurality of stacked plate-shaped busbars, in which one side of each of the plurality of plate-shaped busbars is coated with a resin portion and integrally molded in a direction perpendicular to the stacking direction and the longitudinal direction, and the other side is exposed and not coated with the resin portion.

[0008] In this configuration, the plurality of plate-shaped bus bars are integrally molded with one side covered by the resin portion in the direction perpendicular to the stacking direction and the longitudinal direction, thereby reliably ensuring an insulating distance between the plurality of plate-shaped bus bars. Furthermore, the other sides of the plurality of plate-shaped bus bars are exposed without being covered by the resin portion in the direction perpendicular to the stacking direction and the longitudinal direction, thereby enabling a compact bus bar module. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a vertical cross-sectional view of the vehicle drive device. [Figure 2] FIG. 1 is a perspective view of a power conversion device. [Figure 3] FIG. 2 is an exploded perspective view of the bus bar module. [Figure 4] FIG. 2 is a perspective view of a bus bar module. [Figure 5] 1 is a cross-sectional view illustrating an overview of a bus bar module according to a first embodiment. [Figure 6]FIG. 10 is a cross-sectional view of a bus bar module of a comparative example. [Figure 7] FIG. 10 is a cross-sectional view illustrating an overview of a bus bar module according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of a busbar module according to the present invention will be described below with reference to the drawings. In this embodiment, the busbar module supplies power to a motor via a plurality of electronic components arranged in a power conversion device B. However, the present invention is not limited to the following embodiment, and various modifications are possible without departing from the spirit and scope of the present invention.

[0011] [First embodiment] [Vehicle drive device] 1 shows a vehicle drive device A that transmits the driving force of a drive motor M to drive wheels (not shown) of a vehicle. In the drawings used in this embodiment, the direction along the axis of the motor M (described later) is defined as the X direction, and the direction perpendicular to the X direction and in which various electronic components (described later) are arranged is defined as the Y direction. The direction perpendicular to both the X direction and the Y direction is defined as the Z direction (see FIG. 2).

[0012] The vehicle drive device A accommodates a traction motor M, a gear mechanism Ge that reduces the driving force of the traction motor M and transmits it to the drive wheels, a power conversion device B, and an inverter C, all housed in a housing AH. Hereinafter, a vehicle equipped with a traction motor M as a driving source will also be referred to as an electric vehicle. Examples of electric vehicles include hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), battery electric vehicles (BEVs), and fuel cell electric vehicles (FCEVs).

[0013] The vehicle drive device A is provided in the electric vehicle 100 in the vertical relationship shown in Fig. 1, and therefore in this embodiment, the vertical relationship will be described in accordance with the vertical direction shown in Fig. 1. Also, Fig. 1 shows a vertical cross section of the vehicle drive device A as seen in the front-rear direction, and the left-right direction in Fig. 1 corresponds to the width direction of the vehicle body.

[0014] Power conversion device B converts AC power from an AC power source (basically a commercial power source) supplied from outside electric vehicle 100 into high-voltage DC power. The converted high-voltage DC power is charged into a main battery (not shown) arranged outside vehicle drive device A. Power conversion device B also converts DC power from the main battery to generate AC power similar to that of the commercial power source and supplies it to the outside of electric vehicle 100.

[0015] The inverter C converts DC power from the main battery into three-phase AC power, controls the frequency, and supplies it to the traction motor M. This drives the drive wheels of the electric vehicle 100, causing the electric vehicle 100 to travel.

[0016] 1 and 2, the power conversion device B is configured with multiple layers in which multiple conversion modules (first conversion module Ba, second conversion module Bb, and third conversion module Bc) are arranged in an overlapping manner in the vertical direction. The inverter C is provided above the power conversion device B.

[0017] [Vehicle drive device] As shown in Fig. 1, the vehicle drive device A accommodates a travel motor M and a gear mechanism Ge in a lower space LS of a housing AH. In the vehicle drive device A, the outer side of the travel motor M in the lower space LS is closed by a motor cover 1, and the outer side of the gear mechanism Ge in the lower space LS is closed by a gear cover 2. The rotation axis A1 of the travel motor M is coaxial with the rotation axis of the gear mechanism Ge.

[0018] The vehicle drive device A accommodates a power conversion device B and an inverter C in an upper space HS of a housing AH. This upper space HS is closed by an upper cover 3. The lower space LS and the upper space HS are independent spaces that do not communicate with each other.

[0019] As shown in Figure 1, the power conversion device B has multiple layers in which multiple conversion modules (a first conversion module Ba, a second conversion module Bb, and a third conversion module Bc) are arranged in a stacked state, and an inverter C is provided on the upper surface of the power conversion device B.

[0020] In this embodiment, as described above, the power conversion device B and the inverter C are housed in an integrated state inside the housing AH of the vehicle drive device A, but the power conversion device B may be separated from the inverter C. Furthermore, the vehicle drive device A is configured to house both the power conversion device B and the inverter C inside, but at least one of the power conversion device B and the inverter C may be disposed on the outer wall surface of the housing AH of the vehicle drive device A or outside.

[0021] [Layer structure of power conversion device] As shown in FIGS. 1 and 2, the power converter B has a first conversion module Ba, a second conversion module Bb, and a third conversion module Bc arranged in this order from top to bottom. The power converter B has a first cooling plate 11 arranged on the upper level, and a second cooling plate 12 arranged below it at a set distance. These are connected via a spacer or the like, thereby maintaining the set distance between the first cooling plate 11 and the second cooling plate 12. The first cooling plate 11 and the second cooling plate 12 are configured to have a coolant circulating therethrough. The coolant is cooling water such as long-life coolant (LLC) or insulating oil such as paraffin. A gas such as air or a refrigerant such as a hydrofluorocarbon (HFC) or a hydrofluoroolefin (HFO) may also be circulated inside the first cooling plate 11 and the second cooling plate 12.

[0022] [Power conversion circuit] The power conversion circuit includes a filter unit (not shown), an OBC unit (not shown), an auxiliary inverter unit 60 and a main inverter unit 65 that constitute the inverter C, and a control unit D. The OBC unit includes a transformer T, a low-voltage connector, a conversion circuit, a coil control circuit, a bulk capacitor 16, and various control units. As shown in FIG. 1, the transformer T and the multiple bulk capacitors 16 of the OBC unit are mounted on the underside of the upper substrate 14 and form a second conversion module Bb. Note that the transformer T, the multiple bulk capacitors 16, and related elements may be provided on a substrate different from the upper substrate 14.

[0023] [Power conversion circuit: auxiliary inverter unit] The auxiliary inverter unit 60 of the inverter C functions as a DC-DC converter.

[0024] [Power conversion circuit: Main inverter unit] The main inverter unit 65 of the inverter C has a motor drive circuit 66 (an example of an electronic component) and a smoothing capacitor 67 (an example of an electronic component). The motor drive circuit 66 has a plurality of switching elements and supplies power to the traction motor M. The motor drive circuit 66 is disposed adjacent to the smoothing capacitor 67.

[0025] 2, the main inverter unit 65 including the motor drive circuit 66 and the smoothing capacitor 67 is disposed in contact with or in close proximity to the upper surface of the first cooling plate 11. In this way, the main inverter unit 65 is cooled by the first cooling plate 11.

[0026] When high-voltage power flowing between the OBC unit and the auxiliary inverter unit 60 is supplied to the main inverter unit 65, the main inverter unit 65 functions to supply this high-voltage power from the second high-voltage connector 65a to the main battery for charging. Therefore, in a broad sense, the OBC unit and the main inverter unit 65 can be collectively referred to as an on-board charger.

[0027] In addition, the main inverter unit 65 converts the power from the main battery into three-phase AC power using the motor drive circuit 66, controls the frequency, and supplies it to the traction motor M, thereby obtaining driving force from the traction motor M that enables the electric vehicle 100 to travel.

[0028] [Power conversion circuit: control unit] The control unit D outputs control signals to various control units. As shown in FIG. 2, the control unit D is arranged above the first cooling plate 11 and adjacent to the smoothing capacitor 67. As a result, the control unit D is cooled by the first cooling plate 11.

[0029] [Busbar module] Fig. 3 is an exploded perspective view of the bus bar module 30. Fig. 4 is a perspective view of the bus bar module 30. The bus bar module 30 is disposed at a position adjacent to the motor drive circuit 66.

[0030] The motor drive circuit 66 is a device that converts direct current sent from the main battery into three-phase alternating current using an inverter C. The motor M is an AC motor used as a prime mover for an electric vehicle.

[0031] The busbar module 30 comprises a plurality of stacked plate-shaped busbars 31, 32, 32 (three busbars in this embodiment; hereinafter, the "plate-shaped busbars" will also be simply referred to as "busbars") and a resin part 40 that covers at least a portion of the plurality of busbars 31, 32, 32.

[0032] The busbar module 30 has an integrated structure in which multiple busbars 31, 32, and 33 are stacked and partially covered with a resin portion 40, and extends in an L-shape in the horizontal direction (X direction and Y direction) so as to bypass other devices (not shown). Of the three busbars 31, 32, and 33, the busbar 31 is disposed on the innermost side facing various devices, the busbar 33 is disposed on the outermost side, and the busbar 32 is disposed between the busbars 31 and 33. In this embodiment, the multiple busbars 31, 32, and 33 are all coated with an insulating resin F (see FIG. 5 ). For example, a fluororesin or the like can be used as the insulating resin F. By coating the multiple busbars 31, 32, and 33 with the insulating resin F, the busbar module 30 can maintain each of the busbars 31, 32, and 33 in an insulated state from the other busbars 31, 32, and 33.

[0033] The bus bars 31, 32, and 33 each have a first portion 34, 35, and 36 extending in the X direction and a second portion 37, 38, and 39 extending in the Y direction. The first portions 34, 35, and 36 are provided with connection terminals 34a, 35a, and 36a, respectively, at their distal ends in the X direction and upper portions in the Z direction, extending horizontally inward in the Y direction. The second portions 37, 38, and 39 are provided with connection terminals 37a, 38a, and 39a, respectively, at their distal ends in the Y direction and lower portions in the Z direction, extending horizontally outward in the X direction. The connection terminals 39a are configured to have a vertical portion 39a1 and a horizontal portion 39a2 at the distal end of the second portion 39. The first portions 34, 35, and 36 are provided with intermediate portions 34b, 35b, and 36b at positions adjacent to the second portions 37, 38, and 39. The intermediate portions 34b, 35b, and 36b are formed with cutout portions N of the same shape. The cutout portions N are provided in the lower portions of the intermediate portions 34b, 35b, and 36b and are formed in a rectangular shape.

[0034] 3 to 5, in the Z direction, which is a direction perpendicular to the stacking direction and the longitudinal direction, one side (lower side in the Z direction) of each of the multiple bus bars 31, 32, and 33 is covered and integrated with a resin portion 40, and the other side (upper side in the Z direction) is exposed and not covered by the resin portion 40. In this embodiment, the resin portion 40 is housed in a case portion 50 that is separately formed of resin. The case portion 50 has an accommodation space extending in the X direction and is configured with a bottom portion 51, a first side wall portion 52, and a second side wall portion 53. The case portion 50 has an accommodation space extending in the X direction formed by the bottom portion 51 and the first side wall portion 52, and the second side wall portion 53 is provided at an intermediate position in the X direction of the first side wall portion 52 and extends inward in an arc shape in the Y direction.

[0035] The case 50 further has two brackets 54 and 56. The bracket 54 is provided on the first side wall 52 at a position spaced apart from the intermediate portions 34b, 35b, and 36b in the X direction and extends inward in the Y direction. A cylindrical portion 55 for holding a fixing member (not shown) is provided on the bracket 54 and extends upward in the Z direction. The bracket 56 is provided on the first side wall 52 at a position adjacent to the intermediate portions 34b, 35b, and 36b in the X direction and extends outward in the Y direction. The bracket 56 has a cylindrical portion 57 for holding a fixing member (not shown) and extends upward in the Z direction.

[0036] The plurality of bus bars 31, 32, 33 have cutout portions N cut out in the same shape on one side. The plurality of plate-like bus bars 31, 32, 33 are integrated by engaging the cutout portions N with the resin portion 40.

[0037] The bus bars 31, 32, 33 have bent portions 31a, 32a, 33a bent along the stacking direction (Y direction) to the other side (upper side in the Z direction) in the intermediate portions 34b, 35b, 36b. The notches N are provided at positions (intermediate portions 34b, 35b, 36b) where the bent portions 31a, 32a, 33a are arranged in the longitudinal direction.

[0038] 2 to 4, the bent portions 31a, 32a, and 33a of the bus bars 31, 32, and 33 are all bent outward, toward areas where electronic components (e.g., motor drive circuit 66) are not arranged. By providing these bent portions 31a, 32a, and 33a, the planar area reduced by providing the cutout portion N can be increased, thereby ensuring a conductive area.

[0039] The busbar module 30 can be manufactured, for example, by the following method. As shown in FIG. 5 , the busbar module 30 can be manufactured by holding the multiple busbars 31, 32, and 33 at predetermined positions inside the case portion 50 using a holding member (not shown), and then injecting resin that constitutes the resin portion 40. As a result, as shown in FIGS. 2 and 5 , grooves 41, 42, and 43 are formed in the resin portion 40, and one side (lower side in the Z direction) of each of the multiple busbars 31, 32, and 33 (first portions 34, 35, and 36) is embedded therein. During the formation of the resin portion 40, resin is injected into a second side wall portion 53 of the case portion 50, thereby forming a protruding portion 44 (see FIG. 3 ) in the resin portion 40. The protruding portion 44 serves as a resin injection port, and a thick portion formed by the protruding portion 44 and the second side wall portion 53 strengthens the engagement between the resin portion 40 and the case portion 50. 5, the bent portions 31a, 31b, and 31c of the bus bars 31, 32, and 33 are omitted. As shown in FIG. 5, the other side (the upper side in the Z direction) is exposed without being covered by the resin part 40, which improves the heat dissipation efficiency from the bus bars 31, 32, and 33.

[0040] 6 (comparative example) includes three bus bars 31A, 32A, and 33A, and resin portions 40A disposed between and around the three bus bars 31A, 32A, and 33A. Therefore, although the bus bar module 30A ensures insulation between the three plate-shaped bus bars 31A, 32A, and 33A, the bus bar module 30A is large overall.

[0041] Second Embodiment 7, in the second embodiment, the bus bar module 30 is also configured to include three bus bars 31, 32, and 33 as the plurality of plate-shaped bus bars. However, the second embodiment differs from the first embodiment in that the upper Z-direction sides of the three bus bars 31, 32, and 33 are not all bent in the same direction. The other configurations are the same as those of the first embodiment.

[0042] In the second embodiment, as shown in FIG. 7, of the three bus bars 31, 32, and 33, the two bus bars 31 and 33 located on both sides in the stacking direction have bent portions 31a and 33a that are bent in opposite directions in the stacking direction, respectively, and the central bus bar 33 is not bent and has an upright petal shape.

[0043] [Another embodiment] The present invention may be configured as follows in addition to the above-described embodiment (common numbers and symbols as in the embodiment are used to designate components having the same functions as in the embodiment).

[0044] (a) In the above embodiment, an example was shown in which the busbar module 30 includes three busbars 31, 32, and 33 as the plurality of plate-shaped busbars, but the busbar module 30 may also be configured to include two busbars or four or more busbars as the plurality of busbars.

[0045] (b) In the above embodiment, the bus bars 31, 32, 33 of the bus bar module 30 are all covered with insulating resin, but the bus bars 31, 32, 33 may not be covered with insulating resin.

[0046] (c) In the above embodiment, an example was shown in which the bus bars 31, 32, 33 in the bus bar module 30 have the bent portions 31a, 31b, 31c, but the bus bars 31, 32, 33 may not have the bent portions 31a, 31b, 31c.

[0047] (d) In the above embodiment, an example was shown in which the plurality of bus bars 31, 32, 33 in the bus bar module 30 have the cutout portions N. However, the plurality of bus bars 31, 32, 33 may have no cutout portions N.

[0048] (e) In the above embodiment, an example was shown in which the busbar module 30 has a second side wall portion 53 formed on the case portion 50, and the resin portion 40 has a protruding portion 44 housed in the second side wall portion 53. However, a configuration may also be used in which the second side wall portion 53 of the case portion 50 and the protruding portion 44 of the resin portion 40 are not included.

[0049] (f) In the above embodiment, an example was shown in which the bus bar module 30 includes the case portion 50. However, the bus bar module 30 may be configured without the case portion 50.

[0050] Furthermore, the configurations disclosed in the above embodiments (including other embodiments, the same applies below) can be applied in combination with configurations disclosed in other embodiments, as long as no contradictions arise. Furthermore, the embodiments disclosed in this specification are examples, and the embodiments of the present invention are not limited to these, and can be modified as appropriate within the scope that does not deviate from the purpose of the present invention.

[0051] In the above-described embodiment, the following configurations are envisioned. <1> One aspect of the bus bar module (30) includes a plurality of stacked plate-shaped bus bars (31, 32, 33) and a resin portion (40) that covers at least a portion of the plurality of plate-shaped bus bars (31, 32, 33), and in a direction (Z direction) perpendicular to the stacking direction and the longitudinal direction, one side (lower side in the Z direction) of the plurality of plate-shaped bus bars (31, 32, 33) is covered and integrated with the resin portion (40), and the other side (upper side in the Z direction) is exposed and not covered by the resin portion (40).

[0052] In this configuration, the plurality of plate-shaped bus bars (31, 32, 33) are integrally molded with one side (lower side in the Z direction) covered with the resin portion (40) in a direction perpendicular to the stacking direction and the longitudinal direction (Z direction), thereby stably ensuring a distance sufficient for insulation between the plurality of plate-shaped bus bars. Furthermore, the other side (upper side in the Z direction) of the plurality of plate-shaped bus bars (31, 32, 33) in a direction perpendicular to the stacking direction and the longitudinal direction (Z direction) is not covered with the resin portion (40) and is exposed. This exposed portion improves heat dissipation efficiency while ensuring a sufficient conduction area for the bus bars. As a result, the bus bar module (30) can be configured compactly.

[0053] <2> <1> In the bus bar module (30), the plurality of plate-like bus bars (31, 32, 33) preferably have cutout portions (N) cut out in the same shape on one side (the lower side in the Z direction), and are integrated by engaging the resin portion (40) with the cutout portions (N).

[0054] According to this embodiment, the bus bar module (30) is integrated by the resin portion (40) engaging with the notches (N) of the plurality of plate-shaped bus bars (31, 32, 33). Thus, the bus bar module (30) stably integrates the plurality of plate-shaped bus bars (31, 32, 33) with the resin portion (40), thereby preventing the plate-shaped bus bars (31, 32, 33) from shifting in position.

[0055] <3> <2> In the bus bar module (30), the plate-shaped bus bars (31, 32, 33) preferably have bent portions (31a, 32a, 33a) bent along the stacking direction on the other side (upper side in the Z direction), and the cutout portions (N) are preferably provided at positions in the longitudinal direction where the bent portions (31a, 32a, 33a) are arranged.

[0056] According to this embodiment, the plate-shaped bus bars (31, 32, 33) have bent portions (31a, 32a, 33a) bent along the stacking direction and cutout portions (N) at the same longitudinal positions. The bent portions (31a, 32a, 33a) of the plate-shaped bus bars (31, 32, 33) increase the planar area reduced by the cutout portions (N), thereby ensuring a conductive area. The bent portions (31a, 32a, 33a also enable heat dissipation from the bus bar module (30). However, the bent portions (31a, 32a, 33a) of the plate-shaped bus bars (31, 32, 33) subject the bases of the bent portions (31a, 32a, 33a) of the plate-shaped bus bars (31, 32, 33) to bending stress. However, the plate-like bus bars (31, 32, 33) are reliably held by the resin parts (40) in which the bases of the bent portions (31a, 32a, 33a) are engaged with the notches (N). Therefore, the bus bar module (30) can have increased rigidity at the locations where the bent portions (31a, 32a, 33a) are present.

[0057] <4> <3> In the bus bar module (30), the plurality of plate-shaped bus bars are preferably configured by three plate-shaped bus bars (31, 32, 33), and of the three plate-shaped bus bars (31, 32, 33), the two plate-shaped bus bars (31, 33) located on both sides in the stacking direction have bent portions (31a, 33a) bent in opposite directions in the stacking direction, and the plate-shaped bus bar (32) located in the center is preferably not bent and stands upright.

[0058] According to this embodiment, the bus bar module (30) includes three plate-shaped bus bars (31, 32, 33). The two plate-shaped bus bars (31, 33) located on opposite sides in the stacking direction have bent portions (31a, 33a) that bend in opposite directions in the stacking direction, while the central plate-shaped bus bar (32) stands upright without being bent. Therefore, the three plate-shaped bus bars (31, 32, 33) are spaced apart from each other on their other sides (upper Z-direction) due to the presence of the two bent portions (31a, 33a) and the upright portion (32) on their other sides (upper Z-direction). This reduces thermal interference between the three plate-shaped bus bars (31, 32, 33) that occurs when the other sides (upper Z-direction) are positioned close to each other, further improving heat dissipation efficiency on the other sides (upper Z-direction). As a result, the bus bar module (30) is easily maintained at an appropriate temperature.

[0059] <5> <3> In the bus bar module (30), it is preferable that the bent portions (31a, 32a, 33a) of the plurality of plate-shaped bus bars (31, 32, 33) are all bent outwardly where no electronic components (motor drive circuit 66) are arranged.

[0060] According to this embodiment, the bent portions (31a, 32a, 33a) of the plurality of plate-shaped bus bars (31, 32, 33) are all bent outward, toward areas where no electronic components are located. This makes the bent portions (31a, 32a, 33a) less susceptible to heat generated by electronic components (motor drive circuits 66) located close to the bus bar module (30). As a result, the bus bar module (30) can be more easily maintained at an appropriate temperature. This also allows for greater flexibility in the placement of electronic components. [Industrial Applicability]

[0061] The present invention can be used in a bus bar module. [Explanation of symbols]

[0062] 30: busbar module; 31, 32, 33: plate-shaped busbars (busbars); 31a, 31b, 31c: bending portions; 40: resin portions; 66: motor drive circuit (electronic components); N: notch portions

Claims

1. a plurality of stacked plate-shaped bus bars; a resin portion covering at least a portion of the plurality of plate-shaped bus bars, In the bus bar module, one side of each of the plurality of plate-shaped bus bars is covered and integrated with the resin portion in a direction perpendicular to the stacking direction and the longitudinal direction, and the other side is exposed and not covered by the resin portion.

2. the plurality of plate-like bus bars have cutout portions cut out in the same shape on the one side, The bus bar module according to claim 1 , wherein the resin portion is engaged with the notch portion to form an integrated bus bar module.

3. the plate-shaped bus bar has a bent portion bent along the stacking direction on the other side, The bus bar module according to claim 2 , wherein the notch is provided at a position in the longitudinal direction where the bent portion is disposed.

4. the plurality of plate-shaped bus bars are configured by three of the plate-shaped bus bars, 4. The bus bar module according to claim 3, wherein of the three plate-shaped bus bars, two of the plate-shaped bus bars located on both sides in the stacking direction have the bent portions bent in opposite directions in the stacking direction, and the central plate-shaped bus bar is not bent and stands upright.

5. The bus bar module according to claim 3 , wherein the bent portions of the plurality of plate-shaped bus bars are all bent toward an outer side where no electronic components are arranged.

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