JP2020010573A - Bus bar module - Google Patents

Abstract

To suppress transmission of a noise generated in a device that is operated in the charging by a charging device to another device via a bus bar.SOLUTION: A bus bar module comprises: folding parts 49P and 49N of main bus bars 39P and 39N of a positive electrode (P pole) and a negative electrode (N pole), which connect QC relay boxes 35 and 37 that turn on/off a rapid charging port QP into which a DC power of a high voltage is input from a plug-in charger CHG charging a high voltage battery of a high voltage battery port HBP or a rapid charger with a DCDC converter 56 which drops the DC power of the high voltage of the high voltage battery to a low voltage for a low voltage battery while being operated in charging of the high voltage battery; insulation modules 45 and 47 structuring capacitors C1 and C2 so as to be interposed between the folding parts 49P and 49N; and a core member 59 structuring a coil L1 so as to annularly surround the folding parts 49P and 49N between which an insulation bus bar holding part 69 is interposed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a bus bar module used in a power control unit of a vehicle using a motor as a propulsion source.

  As a power control unit mounted on an electric vehicle using a motor as a propulsion source, a power control unit in which a quick charging device, a charger, a capacitor module, and a DCDC converter are connected by a bus bar is known.

  DC power for quick charging from the quick charger is input to the quick charging device. Further, the charger converts AC power of a commercial power supply into DC power for normal charging of a battery. The capacitor module smoothes DC power input to the quick charging device and DC power converted by the charger. A DCDC converter reduces the power of a battery for a low-voltage battery (for example, Patent Document 1).

International Publication No. 2013/080665

  In the power control unit described above, the DCDC converter operates simultaneously to charge the low-voltage battery while charging the battery with the DC power input to the quick charging port or the DC power converted by the charger. For this reason, there is a possibility that noise generated by switching of the DCDC converter propagates to each part of the power control unit by the bus bar.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a power control unit, in which noise generated in a device operating during charging of a battery is transmitted to other devices in the power control unit by a bus bar. An object of the present invention is to provide a bus bar module that can suppress the occurrence of the bus bar module.

To achieve the above object, a bus bar module according to one aspect of the present invention includes:
A pair of positive and negative busbars for connecting a device for charging a battery and another device operable during charging of the battery by the charging device,
An insulating member that is interposed between the pair of positive and negative bus bars and forms a capacitor together with the pair of positive and negative bus bars;
A magnetic core that annularly surrounds the pair of positive and negative bus bars in which the insulating member is interposed, and forms an inductance component in a circuit including the pair of positive and negative bus bars;
Is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the noise which generate | occur | produced in the device which operates during charge of the battery by a charging device inside a power control unit can be suppressed from propagating to another device of a power control unit by a bus bar. .

FIG. 2 is a partially exploded perspective view showing a power control unit of the electric vehicle including the bus bar unit according to the embodiment of the present invention. It is a perspective view of the bus bar module of FIG. (A), (b) is a perspective view which shows the structure, such as a bus bar molded in the bus bar module of FIG. 2, from a different angle. 3A is an exploded perspective view of the magnetic core module shown in FIGS. 3A and 3B, FIG. 3B is a cross-sectional view showing a state of attachment of the magnetic core module shown in FIG. 3A to a main bus bar, and FIG. FIG. 2 is an enlarged perspective view of a main part showing the arrangement of the core member and the main bus bar. FIG. 4 is an equivalent circuit diagram of a choke coil formed by a main bus bar and a magnetic core module and a capacitor formed by a main bus bar and an insulating module, which are formed in a folded portion of the main bus bar of FIGS. FIG. 3A is a cross-sectional view of a base portion of the insulating module of FIGS. 3A and 3B, and FIG. 3B is a cross-sectional view illustrating an insulating state of a main bus bar by an insulating plate of the insulating module.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially exploded perspective view showing a power control unit of an electric vehicle having a bus bar unit according to an embodiment of the present invention. The power control unit of this embodiment shown in FIG. 1 is mounted on an electric vehicle including a motor as a propulsion source. In the present embodiment, a power control unit mounted on a plug-in hybrid vehicle (PHEV) will be described.

  The power control unit 1 of the present embodiment shown in FIG. 1 includes a charge / discharge of a high-voltage battery (not shown) serving as a power source of a propulsion motor (not shown) of the electric vehicle and a low-voltage load (not shown) of the electric vehicle. In this case, elements related to charging of a low-voltage battery (not shown) serving as a power supply of the auxiliary device are collectively provided.

  The power control unit 1 has a lower case 3 and an upper case 5 superposed thereon. The lower case 3 and the upper case 5 are formed, for example, by casting a metal material having a magnetic shielding function such as aluminum and having a high thermal conductivity.

  The lower case 3 has a housing portion that opens on the bottom surface. The opening of the housing is closed by a lid (not shown). A cooling water inlet port 7 and a cooling water outlet port 9 communicating with a cooling water jacket (not shown) provided in the lower case 3 are provided on a side surface of the lower case 3.

  The upper case 5 has a housing portion 11 which is open on the bottom surface. The opening of the housing 11 is closed by the lower case 3 on which the upper case 5 is stacked. Working openings 15 and 17 are formed in the ceiling surface 13 of the upper case 5 to expose parts and the like housed in the housing portion 11. The working openings 15, 17 are closed by lids 19, 21.

  In addition, port mounting holes 23 and 25 are formed on the side surface of the upper case 5. The quick charging port QP is mounted in the port mounting hole 23. A high-voltage battery port HBP (corresponding to an external connection connector in the claims) is attached to the port attachment hole 25.

  The above-described power control unit 1 is provided with a DCDC converter, a power module and a capacitor module (not shown), a plug-in charger CHG, a controller for controlling these operations, and the like.

  The plug-in charger CHG is housed in the housing 11 of the upper case 5, and the other DCDC converter, power module, capacitor module, controller and the like are housed in the lower case 3.

  The plug-in charger CHG (corresponding to a charging device in the claims) is configured to convert AC power (for example, single-phase 200 V) of a commercial power input from a commercial power port (not shown) to a high-voltage DC by an ACDC converter. Convert to electric power. Then, the converted high-voltage DC power is output as charging power to a high-voltage battery (not shown) connected to the high-voltage battery port HBP.

  The high-voltage battery can be quickly charged by high-voltage DC power (for example, 500 V DC) input from a quick charger (not shown) to the quick charge port QP.

  The DCDC converter converts high-voltage DC power (for example, 400 V DC) of a high-voltage battery (not shown) input from the high-voltage battery port HBP to a DC voltage (for example, 14 V DC) corresponding to a low-voltage load. Convert. Then, the converted low-voltage DC power is output to a low-voltage battery connected to a low-voltage battery port (not shown).

  The power module converts DC power of the high-voltage battery input from the high-voltage battery port HBP into three-phase AC power using an inverter, and outputs the three-phase AC power to a propulsion motor (not shown).

  The capacitor module smoothes the DC power current of the high-voltage battery input from the high-voltage battery port HBP by a built-in smoothing capacitor when the DCDC converter or the inverter of the power module is driven. Also, the capacitor module smoothes the current after conversion into DC power when converting AC power from commercial power into DC power by the plug-in charger.

  Large currents flow through the plug-in charger CHG, the DCDC converter, the power module and the capacitor module, and the ports of the lower case 3 and the upper case 5, respectively. Therefore, a bus bar is appropriately used for the connection between them.

  In the power control unit 1 of the present embodiment, the bus bar module BM obtained by resin-molding the bus bar used for connection in the upper case 5 is housed in the housing 11 of the upper case 5.

  As shown in the perspective view of FIG. 2, the bus bar module BM has a resin block 26 (corresponding to a resin body in the claims) formed by molding. On the upper surface of the resin block 26, a charging terminal portion 27 and a battery terminal portion 29 constituted by concave portions are formed.

  The charging terminal 27 and the battery terminal 29 are open to the side of the bus bar module BM. The charging terminal portion 27 and the battery terminal portion 29 opened to the side surface of the bus bar module BM are connected to the port of the upper case 5 in a state where the bus bar module BM is housed in the housing portion 11 of the upper case 5 as shown in FIG. It is arranged at a position facing the holes 23 and 25.

  As shown in FIG. 2, the charge terminal 27 and the battery terminal 29 are provided with positive (P-pole) and negative (N-pole) quick charge terminals 27P and 27N and high-voltage battery terminals 29P and 29N, respectively. I have. A quick charge port QP and a high voltage battery port HBP (see FIG. 1) are connected to the quick charge terminals 27P and 27N and the high voltage battery terminals 29P and 29N, respectively.

  Positive (P-pole) and negative (N-pole) QC relay terminals 31, 33 are provided at both sides of the charging terminal 27 of the resin block 26, respectively.

  As shown in the perspective view of FIG. 3A, the QC relay boxes 35 and 37 of a positive pole (P pole) and a negative pole (N pole) are respectively provided inside the QC relay terminal sections 31 and 33 of the bus bar module BM. It is buried.

  Each of the QC relay boxes 35 and 37 has a built-in electromagnetic relay. The electromagnetic relays of the QC relay boxes 35 and 37 are turned on and off under the control of the controller of the lower case 3.

  Further, as shown in the perspective views of FIGS. 3A and 3B, the main bus bars 39P and 39N of the positive electrode (P-pole) and the negative electrode (N-pole) are provided inside the resin block 26 of the bus bar module BM. The sub bus bars 41P and 41N, the magnetic core module 43, and the insulating modules 45 and 47 are embedded.

  The positive (P-pole) and negative (N-pole) main bus bars 39P, 39N (corresponding to bus bars in the claims) are connected to one end of the intermediate folded portions 49P, 49N with the battery terminal portion 29 described above. (N-pole) and high-voltage battery terminals 29P and 29N (corresponding to the connector fastening points in the claims).

  QC relay terminals 51P and 51N are formed at the other ends of the main bus bars 39P and 39N of the positive electrode (P-pole) and the negative electrode (N-pole) with the folded portions 49P and 49N interposed therebetween. As shown in FIG. 3A, the QC relay terminals 51P and 51N are connected to the positive (P-pole) and negative (N-pole) QC relay boxes 35 and 37, respectively.

  As shown in FIGS. 3A and 3B, branch terminals 53P, 53N, 55P, and 55N are provided at the folded portions 49P and 49N of the positive (P-pole) and negative (N-pole) main bus bars 39P and 39N. Each is formed.

  As shown in FIG. 3A, a DCDC converter 56 (corresponding to another device in the claims) and a capacitor module (not shown) housed in the lower case 3 are connected to the branch terminals 53P and 53N. Further, a plug-in charger CHG (see FIG. 1) housed in the housing section 11 of the upper case 5 is connected to the branch terminals 55P and 55N.

  As shown in FIGS. 3 (a) and 3 (b), the positive (P-pole) main bus bar 39P and the negative (N-pole) main bus bar 39P have a fixed gap in each of the folded portions 49P and 49N. Are arranged in parallel.

  The positive (P-pole) and negative (N-pole) sub-bus bars 41P, 41N have the positive (P-pole) and negative (N-pole) quick charge terminals 27P, 27N of the charge terminal 27 described above at one end. Each has.

  QC relay terminals 57P and 57N are formed at the other ends of the positive (P-pole) and negative (N-pole) sub bus bars 41P and 41N, respectively. As shown in FIG. 3 (a), each of the QC relay terminals 57P and 57N has a positive electrode (P electrode) and a negative electrode so as to face the QC relay terminals 51P and 51N of the main bus bars 39P and 39N with an insulating plate interposed therebetween. (N-pole) QC relay boxes 35 and 37, respectively.

  The QC relay terminals 51P, 51N of the main bus bars 39P, 39N connected to the QC relay boxes 35, 37 and the QC relay terminals 57P, 57N of the sub bus bars 41P, 41N are connected to the resin block 26 as shown in FIG. QC relay terminal sections 31 and 33 respectively.

  When the electromagnetic relays of the QC relay boxes 35 and 37 are turned on and off, the main bus bars 39P and 39N and the sub bus bars 41P and 41N are turned on and off. When the main bus bars 39P and 39N and the sub bus bars 41P and 41N are turned on by turning on the QC relay boxes 35 and 37, the main bus bars 39P and 39N are connected to the high-voltage battery port HBP by the rapid charging DC power input from the rapid charging port QP. High-voltage battery is charged.

  That is, the QC relay boxes 35 and 37 turn on / off quick charging of the high-voltage battery. Therefore, the QC relay boxes 35 and 37 correspond to charging devices in the claims.

  By the way, in the power control unit 1, the DC power from the quick charger connected to the quick charging port QP or the DC power converted from the commercial power by the plug-in charger CHG is connected to the high-voltage battery port HBP. During charging of the high voltage battery, the DCDC converter operates simultaneously to charge the low voltage battery.

  Therefore, noise generated by switching of the DCDC converter may propagate to other devices of the power control unit 1 connected to the main bus bars 39P and 39N and the sub bus bars 41P and 41N.

  Therefore, in the power control unit 1 of the present embodiment, the above-described magnetic core module 43 and the insulating module are provided in the folded portions 49P and 49N of the positive (P-pole) and negative (N-pole) main bus bars 39P and 39N of the bus bar module BM. 45 and 47 are arranged so as to exert a noise filter function.

  Hereinafter, the configurations of the magnetic core module 43 and the insulating modules 45 and 47 will be described in detail.

  The magnetic core module 43 is provided at an intermediate point between the folded portions 49P and 49N of the positive (P-pole) and negative (N-pole) main bus bars 39P and 39N. The magnetic core module 43 has an annular core member 59 and a core holder 61 as shown in the perspective view of FIG.

  The core member 59 (corresponding to a magnetic core in the claims) is formed by stacking three half core pieces 63, 63 formed of a magnetic material such as ferrite, so that a total of six core pieces 63 exhibit an annular shape as a whole. It is configured as follows.

  The core holder 61 (corresponding to a magnetic core holder in the claims) is formed of an insulating ceramic. The core holder 61 has a core housing portion 65 in which the core member 59 is housed. The core accommodating portion 65 is opened on the side of the core holder 61.

  On the upper surface of the core holder 61, a slit 67 communicating with the core housing portion 65 is formed. The core accommodating portion 65 is provided with a bus bar holding portion 69 (corresponding to a middle insulating member in the extending direction of the bus bar in the claims). The busbar holding portion 69 has two busbar holding grooves 69P and 69N opened upward.

  The folded portions 49P and 49N of the main bus bars 39P and 39N inserted into the core housing portion 65 from the slit 67 are inserted into the bus bar holding grooves 69P and 69N, respectively.

  As shown in FIG. 4B, when the folded portions 49P and 49N of the main bus bars 39P and 39N are inserted into the bus bar holding grooves 69P and 69N, respectively, the bus bar holding portions 69 are arranged between the main bus bars 39P and 39N. . After the folded portions 49P and 49N are inserted into the bus bar holding grooves 69P and 69N, the core pieces 63 of the core member 59 are inserted into the core receiving portion 65 from the side of the core holder 61 as shown in FIG. Is done.

  The core member 59 inserted into the core accommodating portion 65 is annularly arranged around the bus bar holding portion 69. Therefore, the core members 59 are annularly arranged at intervals around the folded portions 49P and 49N of the main bus bars 39P and 39N via the core holder 61 as shown in FIG. 4C.

  Due to this arrangement, the common mode choke coil L1 (inductance component in the claims) shown in the equivalent circuit diagram of FIG. ) Is configured.

  As shown in FIG. 4A, a flange 71 is formed at the lower end of the core holder 61. A locking groove 73 is formed in the flange portion 71 (corresponding to a mounting point in the claims) to lock the head of a bolt (not shown). As shown in FIG. 2, the flange portion 71 extends outside the resin block 26 of the bus bar module BM.

  As shown in FIGS. 3A and 3B, the insulating modules 45 and 47 are provided with the magnetic core module 43 of the folded portions 49P and 49N of the positive (P-pole) and negative (N-pole) main bus bars 39P and 39N. Are provided on both sides, respectively.

  Each of the insulating modules 45 and 47 (corresponding to an insulating member in the claims) is formed of an insulating ceramic. As shown in the cross-sectional view of FIG. 6A, each of the insulating modules 45 and 47 has an insulating plate 75 and a mounting leg 77, respectively.

  As shown in FIGS. 3A and 3B, the insulating plate portion 75 is inserted between the folded portions 49P and 49N of the main bus bars 39P and 39N to electrically insulate the folded portions 49P and 49N.

  Due to this arrangement, the capacitors C1 and C2 shown in the equivalent circuit diagram of FIG. Each is configured.

  The two capacitors C1 and C2 and the choke coil L1 between them constitute the noise filter F of FIG. 5 in the folded portions 49P and 49N of the main bus bars 39P and 39N shown in FIGS. You.

  As shown in the sectional view of FIG. 6B, the mounting leg 77 is formed at the lower end of the insulating plate 75. A mounting hole 81 through which a bolt 79 is inserted is formed in the mounting leg 77 (corresponding to a mounting point in the claims). As shown in FIGS. 3A and 3B, the mounting leg 77 is disposed below the main bus bars 39P and 39N in which the insulating plate 75 is inserted between the folded portions 49P and 49N, as shown in FIG. And extends outside the resin block 26 of the bus bar module BM.

  When the bus bar module BM of the present embodiment configured as described above is housed in the housing portion 11 of the upper case 5, the flange portion 71 and the mounting legs extending to the outside of the resin block 26 by fastening members such as bolts 79. The part 77 is fixed to the upper case 5 (corresponding to a mounting object of the bus bar module in the claims).

  When the bus bar module BM accommodated in the accommodating portion 11 is fixed to the upper case 5, the upper surface of the bus bar module BM contacts the ceiling surface 13 of the upper case 5 from inside. Then, the charging terminal portion 27 and the battery terminal portion 29 arranged on the upper surface of the bus bar module BM are exposed at the working opening 15 formed on the ceiling surface 13 of the upper case 5.

  Therefore, when connecting the quick charging port QP and the high-voltage battery port HBP inserted into the port mounting holes 23 and 25 of the upper case 5 to the charging terminal 27 and the battery terminal 29 of the bus bar module BM, respectively, The connection work is performed through the work opening 15 from which the body 19 has been removed.

  Specifically, the charging terminals 27P and 27N and the high-voltage battery terminals 29P and 29N of the charging terminal portion 27 and the battery terminal portion 29 exposed to the work opening 15 are not connected to the quick charging port QP and the high-voltage battery port HBP. The illustrated terminals are respectively fastened by fastening members.

  Accordingly, the work of attaching the quick charge port QP and the high voltage battery port HBP to the charging terminal 27 and the battery terminal 29 of the main bus bars 39P and 39N and the sub bus bars 41P and 41N can be easily performed through the working opening 15. be able to.

  When the bus bar module BM is accommodated in the accommodating portion 11 of the upper case 5, the bus bar module BM comes into contact with the ceiling surface 13 of the upper case 5 from inside the upper case 5; There is no gap between them.

  Therefore, even if the fastening member inserted into the upper case 5 from the working opening 15 moves to a place other than the quick charging terminals 27P and 27N and the high-voltage battery terminals 29P and 29N, the working opening 15 and the bus bar module BM can be used. From the gap between the upper case 5 and the inner case.

  In the power control unit 1 according to the present embodiment, when the DCDC converter is simultaneously operated to charge the low-voltage battery during charging of the high-voltage battery connected to the high-voltage battery port HBP, the switching generated by the DCDC converter Noise propagates to the main bus bars 39P and 39N.

  When this noise propagates from the branch terminals 53P and 53N to which the DCDC converter is connected to the folded portions 49P and 49N of the main bus bars 39P and 39N, the choke coil L1 having the magnetic core module 43 and the insulating module 45 is provided. The noise is filtered by the noise filter F by the capacitor C1.

  Also, when noise occurs in the devices connected to the branch terminals 55P and 55N of the main bus bars 39P and 39N, the high voltage battery terminals 29P and 29N, and the QC relay terminals 51P and 51N, and the noise propagates to the main bus bars 39P and 39N. When the noise propagates to the folding portions 49P and 49N, the noise is filtered by the noise filter F.

  Therefore, even if the noise propagates from the device that generates the noise to the main bus bars 39P and 39N to which the device is connected, the noise is transmitted to the noise filters F formed in the folded portions 49P and 49N of the main bus bars 39P and 39N. , And can be prevented from propagating to other devices.

  In this embodiment, the bus bar in the power control unit 1 is divided into the main bus bars 39P and 39N and the sub bus bars 41P and 41N. However, the bus bar may be composed of one bus bar and divided into three or more. You may comprise.

  When the main bus bar 39P and the sub bus bar 41P, and the main bus bar 39N and the sub bus bar 41N are each configured by one bus bar, the charging terminal 27 corresponds to a recess in the claims. Further, the quick charge port QP corresponds to the connector for external connection in the claims, and the high voltage battery terminals 29P and 29N correspond to the fastening portions of the connectors in the claims.

  Further, the housing of the power control unit 1 is divided into the lower case 3 and the upper case 5 as in the present embodiment, or is constituted by one housing, or divided into three or more cases. Can be arbitrarily selected. When the housing is divided into a plurality of cases, it is possible to arbitrarily select which device of the power control unit 1 is to be accommodated in each of the divided cases.

  The present invention can be used in a power control unit of a vehicle using a motor as a propulsion source.

1 Power control unit 3 Lower case 5 Upper case (Busbar module installation target)
7 Water Inlet Port 9 Water Outlet Port 11 Housing 13 Ceiling Surface 15,17 Work Opening 19,21 Lid 23,25 Port Mounting Hole 26 Resin Block (Resin Body)
27 Charging terminal 27P, 27N Quick charging terminal 29 Battery terminal (recess)
29P, 29N High-voltage battery terminals (connector connection points)
31, 33 QC relay terminal 35, 37 QC relay box (charging device)
39P, 39N Main bus bar (bus bar)
41P, 41N Sub bus bar 43 Magnetic core module 45, 47 Insulation module 49P, 49N Main bus bar folded part 51P, 51N QC relay terminal 53P, 53N, 55P, 55N Branch terminal 57P, 57N QC relay terminal 59 Core member (magnetic core)
61 Core holder (magnetic core holder)
63 core piece 65 core receiving part 67 slit 69 bus bar holding part (insulating member)
69P, 69N Busbar holding groove 71 Flange (attachment point)
73 Locking groove 75 Insulating plate (insulating member)
77 Mounting leg (mounting point)
79 bolt 81 mounting hole BM bus bar module C1, C2 capacitor CHG plug-in charger (charging device)
F Noise filter HBP High voltage battery port (connector for external connection)
L1 choke coil (inductance component)
QP quick charge port

Claims (5)

A pair of positive and negative bus bars for connecting a battery charging device (35, 37, CHG) and another device (56) operable during charging of the battery by the charging device (35, 37, CHG). (39P, 39N),
An insulating member (45, 47, 69) interposed between the pair of positive and negative bus bars (39P, 39N) and forming a capacitor (C1, C2) together with the pair of positive and negative bus bars (39P, 39N);
The pair of positive and negative bus bars (39P, 39N) surrounding the pair of positive and negative bus bars (39P, 39N) interposed therebetween in the insulating member (69) constitutes an inductance component (L1) in a circuit including the pair of positive and negative bus bars (39P, 39N). A magnetic core (59);
A bus bar module (BM) comprising:   The insulating members (45, 47, 69) are interposed between the pair of positive and negative bus bars (39P, 39N) at three locations spaced apart in the extending direction of the pair of positive and negative bus bars (39P, 39N). The magnetic core (59) annularly surrounds a portion of the pair of positive and negative bus bars (39P, 39N) where the middle insulating member (69) in the extending direction is interposed. A busbar module (BM) as described.   It further includes a resin body (26) for sealing the pair of positive and negative bus bars (39P, 39N) and the insulating member (45, 47), and the insulating member (45, 47) is formed of the resin body (26). The bus bar module (3) according to claim 1 or 2, further comprising an attachment point (77) extending outside of the bus bar module (BM), the attachment point (77) being attached to an attachment object (5) of the bus bar module (BM). BM).   A magnetic core holder that holds the magnetic core (59) and arranges the magnetic core (59) at a position surrounding the pair of positive and negative bus bars (39P, 39N) with the insulating member (69) interposed therebetween. 61) and a resin body (26) for sealing the pair of positive and negative bus bars (39P, 39N), the magnetic core (59) and the magnetic core holder (61), and the magnetic core holder (61). Has an attachment point (71) extending outside the resin body (26), and the attachment point (71) is attached to an attachment object (5) of the bus bar module (BM). The busbar module (BM) according to 1, 2, or 3.   A resin body (26) for sealing the pair of positive and negative bus bars (39P, 39N) is further provided. The resin body (26) is a connector () for externally connecting the pair of positive and negative bus bars (39P, 39N). HBP, QP) is accommodated in the concave portion (29), and a fastening portion (29P, 29N) of the connector (HBP) in the pair of positive and negative bus bars (39P, 39N) is exposed to the concave portion (29). The bus bar module (BM) according to claim 1, 2, 3, or 4, wherein

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