WO2018180270A1

WO2018180270A1 - Bus bar and wiring module

Info

Publication number: WO2018180270A1
Application number: PCT/JP2018/008495
Authority: WO
Inventors: 泰次柳田; 慎一高瀬; 前田　義博; 典彦市川
Original assignee: 株式会社オートネットワーク技術研究所; 住友電装株式会社; 住友電気工業株式会社
Priority date: 2017-03-27
Filing date: 2018-03-06
Publication date: 2018-10-04

Abstract

This bus bar 10, to which a detection wire 30 for voltage detection is connected, establishes, in a power module 3 comprising a plurality of power storage elements 2, a connection among the plurality of power storage elements 2. This bus bar 10 comprises a bus bar main body 11 to which a core wire 32 from the detection wire 30 is connected, and a wire constraining portion 23 pre-formed as a single body therewith, in such a form as to cover the bus bar main body 11 from above and constraining the upward displacement of the detection wire 30 inserted into a space downward therefrom. This bus bar 10 connects the detection wire 30 to the plurality of power storage elements 2.

Description

Busbar and wiring module

The present invention relates to a bus bar and a wiring module.

A power storage module of a vehicle such as an electric vehicle or a hybrid vehicle is configured by arranging a plurality of power storage elements having electrode terminals side by side, and connecting the electrode terminals of adjacent power storage elements by bolting a flat bus bar. Are connected in series.

As this type of bus bar, there is one in which a barrel portion for crimping and connecting a detection electric wire (hereinafter referred to as “electric wire”) for detecting the voltage of a storage element is integrally formed.

Japanese Unexamined Patent Publication No. 2016-9645 (FIG. 3)

In this technology, the core wire exposed from the coated terminal of the electric wire is welded to the surface of the bus bar to obtain an electrical connection, and the vicinity of the coated terminal is fixed by caulking in the barrel portion, thereby connecting the electric wire and the bus bar. The state is retained.

However, according to this configuration, a caulking process is required in addition to the welding process of connecting the electric wires to the bus bar, and the manufacturing process is complicated. In addition, since the barrel portion is formed of a single metal plate together with the conductor portion and becomes relatively thick, springback is likely to occur after caulking. While suppressing this, it is not easy to caulk in the desired shape without damaging the insulation coating of the electric wire, and caulking defects tend to occur.

This invention was completed based on the above situations, Comprising: It aims at connecting and hold | maintaining reliably by an easy operation | work to the bus bar which connects between power elements, without damaging a detection electric wire. .

The technology disclosed in the present specification is a bus bar that connects between the plurality of power elements in a power module including a plurality of power elements and is connected to a detection wire for voltage detection, and the core wire of the detection wire Is connected to the bus bar main body, and an electric wire regulating portion that regulates upward displacement of the detection electric wire that is integrally formed in advance in a form covering the bus bar main body and inserted into the lower space thereof, The detection electric wire is connected to the plurality of power elements.

According to this configuration, it is possible to control the upward displacement of the detection electric wire simply by arranging the detection electric wire in the space below the electric wire restricting portion, and to prevent the core wire from being peeled off from the bus bar. Thus, it is possible to provide a bus bar in which the detection wires are securely connected and held by simple operations.

The bus bar body is integrally formed with a wire support portion corresponding to a portion of the detection wire that extends to the side of the bus bar body, and the wire restriction portion covers the wire support portion from above. It may be formed.

According to this configuration, the portion of the detection wire that extends to the side of the bus bar main body can be held in the internal space between the wire support portion and the wire restriction portion. Work becomes easy.

In addition, in the technology disclosed in the present specification, in a power module including a plurality of power elements, a bus bar for connecting the plurality of power elements is accommodated in an insulation protector, and a detection electric wire for voltage detection is stored in the bus bar. The bus bar is connected to the bus bar body to which the core wire of the detection wire is connected, and the detection is inserted into the lower space of the bus bar body, which is integrally formed in advance in a form covering the bus bar body from above. An electric wire restricting portion for restricting the upward displacement of the electric wire, and the insulating protector includes an electric wire fixing portion for fixing the detection electric wire extending from the electric wire restricting portion.

According to this configuration, the detection wire is held in a state where the upward movement of the detection wire is restricted in the space below the wire restricting portion and the peeling force is prevented from being applied to the core wire connected to the bus bar body. In addition, since the portion extending from it is fixed by being sandwiched by an insulation protector, the detection wire does not rub against the edge of the wire regulating portion and does not affect the coating, ensuring a secure electrical connection. Can be held in.

The detection electric wire extending from the electric wire regulating portion is placed on the insulation protector, and a cover portion provided on the insulation protector is covered from above, so that the gap between the cover portion and the insulation protector. It may be sandwiched between.

According to this configuration, since the detection electric wire can be fixed simply by covering the cover portion with the insulating protector, the operation becomes easy.

The bus bar body is integrally formed with a wire support portion corresponding to a portion of the detection wire that extends to the side of the bus bar body, and the wire restriction portion covers the wire support portion from above. The insulation protector may include a regulation wall that covers a space between the wire regulation part and the wire support part from the side.

According to this configuration, when the bus bar is housed in the insulation protector, the detection wire placed between the wire restriction portion and the wire support portion is restricted from being displaced laterally by the insulation protector. It can hold | maintain in the downward space of an electric wire control part.

According to the technology disclosed in the present specification, it is possible to reliably connect and hold the detection wires in an easy operation without damaging the detection wires in the bus bar connecting the power elements.

The top view which shows the wiring module of Embodiment 1. Perspective view showing the bus bar Rear view showing the busbar Perspective view showing the wiring module The perspective view which shows the state with which the cover was covered in the wiring module AA sectional view of FIG. BB sectional view of FIG. The perspective view which shows the wiring module of Embodiment 2. FIG. The perspective view which shows the state with which the cover was covered in the wiring module Top view showing the cover on the wiring module CC sectional view of FIG. The perspective view which shows the bus-bar of Embodiment 3. The perspective view which shows the bus-bar of Embodiment 4.

<Embodiment 1>
A first embodiment according to the technique disclosed in this specification will be described with reference to FIGS. In the following description, the X direction in the figure is the right side, the Y direction is the front side, and the Z direction is the upper side. Moreover, in the following description, about the some same member, a code | symbol may be attached | subjected only to one part member, and the code | symbol of another member may be abbreviate | omitted.

The wiring module 1 of the present embodiment is arranged in a power module 3 used as a power source in a vehicle (not shown) such as an electric vehicle or a hybrid vehicle. As shown in FIG. 1A, the wiring module 1 has a bus bar 10 connected to the electrode terminals 4 of a plurality of power storage elements 2 (an example of a power element) forming the power module 3, and one end connected to the bus bar 10. The detected electric wire 30 and the insulation protector P1 which hold | maintains these integrally are provided. The other end of the detection wire 30 is electrically connected to an ECU (Electronic Control Unit) (not shown) that monitors the state of the power storage element 2 by detecting a voltage or the like. As shown in FIG. 1, the wiring module 1 is connected to the left and right according to the number of power storage elements 2, but the description and illustration of the connection structure are omitted.

As shown in FIG. 2, the bus bar 10 is entirely composed of a single metal plate. For example, a relatively thick plate made of aluminum or aluminum alloy is punched into a predetermined shape, and the shape shown in FIG. Are pre-formed. A metal such as tin or nickel may be plated on the surface of the bus bar 10. The bus bar 10 includes a bus bar main body 11 for connecting the electrode terminals 4 of the adjacent power storage elements 2, and an electric wire surrounding portion 20 formed integrally with the bus bar main body 11.

The bus bar main body 11 has a substantially rectangular flat plate shape that is long on the left and right, and electrode insertion holes 12 for connecting the power storage elements 2 are provided in the vicinity of both ends in the longitudinal direction. The electrode terminal 4 of the power storage element 2 can be inserted into the electrode insertion hole 12.

As shown in FIGS. 2 and 3, the wire surrounding portion 20 includes a wire support portion 21 that extends rearward from the center of the rear end of the bus bar main body 11 in the shape of a belt and is flush with the bus bar main body 11, and a wire support portion. A side restricting portion 22 that extends upward from the left edge of 21 and an upper restricting portion 23 that extends rightward from the upper end of the side restricting portion 22 and covers the upper surface of the wire support portion 21 (an example of a wire restricting portion). And. Thereby, as shown in FIG. 2 and FIG. 3, the electric wire surrounding part 20 has comprised the substantially square cylinder shape by which the front and back and the right side were opened as a whole. In addition, the opening on the right side is a receiving port 24 for allowing the detection wire 30 to pass through the space below the upper restricting portion 23, and the rear opening is an extension port 25 for extending the detection wire 30 rearward. .

As shown in FIG. 2, the detection electric wire 30 is a covered electric wire having a circular cross section provided with a core wire 32 and an insulating coating 31 made of a synthetic resin covering the outer periphery of the core wire 32. The core wire 32 is formed from arbitrary metals as needed, such as copper, the same alloy, aluminum, and an aluminum alloy. The core wire 32 may be either a stranded wire formed by twisting a plurality of fine metal wires or a single wire.

Detecting wire 30 has an insulating coating 31 peeled off at one end side to expose core wire 32. As shown in FIG. 1B, the exposed core wire 32 is welded in the vicinity of the center of the rear end portion of the bus bar main body 11. The detection electric wire 30 extending from the welded portion extends rearward from the extension outlet 25 through the internal space of the electric wire surrounding portion 20 (the lower space of the electric wire regulating portion). In the present embodiment, the portion of the detection wire 30 that is covered with the insulating coating 31 is arranged in the internal space of the electric wire enclosure 20, but the exposed portion of the core wire 32 is arranged in the internal space of the electric wire enclosure 20. May be.

The insulation protector P1 is formed of an insulating synthetic resin, and as shown in FIG. 4, a bus bar accommodating portion 40 for accommodating the bus bar 10 and an electric wire for accommodating the detection electric wire 30 extending from the bus bar accommodating portion 40. The housing part 60 and the cover part 70 provided in the electric wire housing part 60 via the hinge are provided, and it has a rectangular parallelepiped shape that is flat as a whole.

The bus bar accommodating portion 40 is integrally provided with a main body accommodating portion 49 for accommodating the bus bar main body 11 and a connecting portion 50 in which the electric wire surrounding portion 20 is disposed, and has an inverted T shape as a whole as viewed from above. Yes.

The main body accommodating portion 49 has a rectangular parallelepiped box shape including a rectangular bottom surface portion 41 that is long on the left and right sides, and a peripheral wall 42 that is erected from the periphery of the bottom surface portion 41. A communication hole (not shown) through which the electrode terminal 4 of the electric storage element 2 is inserted is provided in the vicinity of both left and right end portions of the bottom surface portion 41. In the center of the rear wall 42 B of the peripheral wall 42, an opening 44 having a shape cut out from the upper end to the bottom surface portion 41 is provided. Further, as shown in FIGS. 1 and 4, a pair of left and right locking projections 43 are provided on the rear wall 42B and the front wall 42A, respectively. Each locking projection 43 is disposed at a position above the upper surface of the bus bar main body 11, and its lower surface is opposed to the upper surface of the bus bar main body 11.

The connecting portion 50 includes a support surface portion 51 extending in a strip shape on the same plane from the bottom surface portion 41 of the main body housing portion 49, and a pair of restriction walls 52 erected from both side edges of the support surface portion 51. It has a square hook shape slightly longer than the electric wire surrounding portion 20 of the bus bar 10. The restriction wall 52 is provided continuously from the opening 44 of the rear wall 42B of the main body accommodating portion 49, the height dimension is one step lower than the rear wall 42B, and is equal to or greater than the height dimension of the electric wire surrounding portion 20 of the bus bar 10. It is said that. In addition, the latching receiving part 90 for latching the cover part 70 mentioned later is provided in the right and left of the control wall 52. As shown in FIG.

In a state where the bus bar 10 to which the detection wire 30 is connected is housed in the bus bar housing portion 40, the clearance W between the receiving port 24 of the wire surrounding portion 20 and the right regulation wall 52 is equal to or less than the diameter of the detection wire 30. ing. Further, the extension outlet 25 of the electric wire enclosure 20 is located in the vicinity of the front wall 42 A of the electric wire housing 60.

The electric wire housing part 60 is provided behind the bus bar housing part 40 (connecting part 50), and has a long square shape on the left and right. The left and right end portions are opened so as to form one wire housing space together with the wire housing portion 60 of the adjacent insulation protector P1. The wall 60A on the front side of the electric wire housing part 60 is provided with the rear ends of both restricting walls 52 continuously, and a communication groove 62 described later is formed in the region between the restricting walls 52 in the wall 60A. It is provided in a substantially V-shape that tapers downward. An arcuate placement recess 62A (an example of a fixed portion) that matches the circumferential surface of the detection wire 30 is formed at the bottom of the communication groove 62.

As shown in FIG. 7, the detection electric wire 30 extending from the rear end of the electric wire surrounding portion 20 of the bus bar 10 is introduced into the electric wire accommodating portion 60 through the placement concave portion 62 A, and the inner space of the electric wire accommodating portion 60. Is routed to the left, is led out from the opening at the left end, and is introduced into the inside of the electric wire accommodating portion 60 of the adjacent wiring module 1.

As shown in FIG. 4, the cover part 70 is configured by projecting a closing wall part 72 and a pair of locking claws 91 on a rectangular top plate 71 that is long on the left and right.

The closed wall portion 72 is disposed at the center of the front end (rear end in FIG. 4) of the top plate 71, and has a substantially inverted V shape that tapers upward in the state in FIG. An arc-shaped holding concave portion 72 A (an example of an electric wire fixing portion) corresponding to the peripheral surface of the detection electric wire 30 is formed on the top portion of the closing wall portion 72. Each locking claw 91 is provided at the front end (rear end in FIG. 4) of the top plate 71, and is arranged on the left and right with the closing wall portion 72 interposed therebetween.

Note that an arc-shaped holding recess 72A corresponding to the peripheral surface of the detection wire 30 is provided at the top (bottom portion in FIG. 5) of the closed wall portion 72, while the periphery of the detection wire 30 is provided at the bottom of the communication groove 62 described above. An arcuate mounting recess 62A corresponding to the surface is provided (see FIG. 6).

In the state where the cover part 70 is put on the electric wire housing part 60, as shown in FIGS. 5 and 6, the closing wall part 72 is fitted into the communication groove 62, and the holding recessed part 72A is formed on the mounting recessed part 62A. A circular holding hole 93 is formed so as to be arranged on the upper side and substantially the same as the diameter of the detection electric wire 30. As shown in FIG. 7, the holding hole portion 93 is formed at a position slightly lower than the upper surface of the wire support portion 21 and slightly higher than the upper surface of the support surface portion 51, so that the detection wire 30 is slightly bent downward. It is held in the holding hole 93.

Next, the assembly procedure of the wiring module 1 of this embodiment is illustrated.

First, as shown by a one-dot chain line in FIG. 2, the detection electric wire 30 is inserted from the receiving port 24 of the electric wire surrounding portion 20 of the bus bar 10 and arranged in the lower space of the upper restricting portion 23, and the core wire is maintained while maintaining the state. 32 is welded to the upper surface of the bus bar body 11. Next, the bus bar main body 11 is pushed into the bus bar accommodating portion 40 of the insulation protector P1 from above. Then, the bus bar main body 11 is fitted below the locking protrusions 43 provided on the front wall 42A and the rear wall 42B, and is accommodated in the bus bar accommodating portion 40 in a state in which upward movement is restricted. At the same time, the electric wire surrounding portion 20 is arranged in the connecting portion 50 while the receiving port 24 is closed by the restriction wall 52 on the right side of the connecting portion 50. Thereby, the extension part from the bus-bar main body 11 of the detection electric wire 30 will be enclosed by the electric wire enclosure part 20 and the control wall 52, and will be in the state in which the upward displacement and the drop-off | omission from the side were controlled.

Finally, the detection electric wire 30 extending from the extension port 25 of the electric wire surrounding portion 20 is placed in the placement concave portion 62A, and is routed in the electric wire housing portion 60. As shown in FIG. Cover. Then, as shown in FIGS. 6 and 7, the closing wall portion 72 of the cover portion 70 fits into the communication groove 62, and the holding recess 72 A covers the detection electric wire 30 and the locking claw 91 of the cover portion 70. Is locked to locking receiving portions 90 provided on both the left and right sides of the connecting portion 50, and the upward displacement is restricted. As a result, the detection electric wire 30 extending from the bus bar main body 11 is restrained from being displaced upward by the electric wire surrounding portion 20, and is held in the holding hole portion 93 at the rear of the extension port 25 of the electric wire surrounding portion 20. In this state, the wiring module 1 accommodated in the insulation protector P1 is completed.

According to said structure, since the part extended from the welding location with the bus-bar 10 is controlled by the upper control part 23 to the upward displacement by the detection electric wire 30, this part is crimped and fixed to bus-bar 10 itself. The welded state can be maintained without going through complicated steps such as.

In addition, when the bus bar 10 is formed by punching or the like, burrs are formed at the edges, and the insulation coating 31 may be damaged if the detection electric wire 30 is rubbed against the burrs. 10 is accommodated in the insulation protector P1, the receiving port 24 of the electric wire enclosure 20 is closed by the restriction wall 52 of the insulation protector P1, and the extension outlet 25 of the electric wire enclosure 20 has the detection electric wire 30 extending therefrom. Since it is fixedly held by the insulation protector P 1, there is no fear that the detection electric wire 30 is rubbed against both the receiving port 24 and the extension port 25. Therefore, the edge processing of the electric wire surrounding portion 20 is relatively simple, and the manufacturing cost can be suppressed.

<Embodiment 2>
Next, a second embodiment according to the technique disclosed in this specification will be described with reference to FIGS.

In the wiring module 100 of this embodiment, a closing plate portion 172 (an example of an electric wire fixing portion) is provided on the cover portion 170 of the insulation protector P2. The closing plate portion 172 includes a rectangular plate-like first closing plate portion 172A and a second closing plate portion 172B that form a pair in the front and rear direction. Both closing

plate portions

172A and 172B are connected by ribs. In each of the

closing plate portions

172A, 172B, an arc-shaped holding recess 173 (173A, 173B) (an example of a wire fixing portion) corresponding to the peripheral surface of the detection wire 30 is provided in the center of the upper end in the state of FIG. ing.

When the cover part 170 is put on the electric wire housing part 160, as shown in FIGS. 9 to 11, the front first closing plate part 172 A and the rear second closing plate part 172 B are in front of the electric wire housing part 160. The side wall 160A is sandwiched. Accordingly, the holding

recesses

173A and 173B and the mounting recess 162A of the communication groove 162 form a holding hole 193 that is slightly flat in the vertical direction when viewed from the front. The height of the holding hole 193 is slightly smaller than the diameter of the detection wire 30, and the detection wire 30 is pushed downward by the holding

recesses

173A and 173B before and after the mounting recess 162A as shown in FIG. It is held in a bent state. In this state, the extension outlet 25 of the electric wire surrounding part 20 of the bus bar 10 is arranged in the immediate vicinity of the front closing plate part 172A. Since the other structure of this embodiment is the same as that of Embodiment 1, the same code | symbol is attached | subjected about the same member and the overlapping description is abbreviate | omitted.

According to this configuration, the detection electric wire 30 extending from the electric wire surrounding portion 20 is arranged to meander up and down under the holding

concave portions

173A and 173B and the mounting concave portion 162A and is tightly held. . Thereby, even when the vibration of the vehicle is transmitted to the detection electric wire 30, it is possible to prevent the insulation coating of the detection electric wire 30 from rubbing against the extension port 25 of the electric wire enclosure 20. Further, even when an external force is applied to the detection electric wire 30, the welded portion between the core wire 32 and the bus bar main body 11 can be cut off from the external force at the electric wire housing portion 160 or outside thereof. The connection state can be more reliably maintained.

<Embodiment 3>
Next, a third embodiment according to the technique disclosed in this specification will be described with reference to FIG.

The bus bar 210 according to the present embodiment includes a bus bar main body 211 and an electric wire surrounding portion 220 formed integrally with the bus bar main body 211. The wire enclosing portion 220 of the bus bar 210 is not formed with a receiving port, and is provided with a right restricting portion 227 extending downward from the right end of the upper restricting portion 223 so as to surround almost the entire circumference of the detection wire 30. It has become.

When connecting the detection wire 30 to the bus bar 210, the detection wire 30 is inserted from the rear end of the wire surrounding portion 220 into the lower space of the upper restriction portion 223. This embodiment is suitable when, for example, the detection electric wire 30 is relatively thin and easily bent and is likely to fall off from the receiving port 24 of the electric wire enclosure 20 after welding. In addition, since the other structure of this embodiment is the same as that of Embodiment 1, the same code | symbol is attached | subjected about the same member and the overlapping description is abbreviate | omitted.

<Embodiment 4>
Next, a fourth embodiment according to the technique disclosed in this specification will be described with reference to FIG.

The bus bar 310 according to the present embodiment includes a bus bar main body 311 and an electric wire surrounding portion 320 formed integrally with the bus bar main body 311. The bus bar 310 includes a wire support part 321, a side restriction part 322 extending upward from the left edge of the wire support part 321, and a right side extending from the upper end of the side restriction part 322, and an upper surface of the wire support part 321. And a right restricting portion 327 extending upward from the right side of the overhanging portion 328 formed to protrude rightward from the right end edge of the electric wire support portion 321. A gap is provided between the upper end of the right restricting portion 327 and the right end of the upper restricting portion 323, and this gap serves as a receiving port 324 through which the detection electric wire 30 is inserted toward the space below the upper restricting portion 323. Also in this embodiment, the right restricting portion 327 is arranged such that the upper end thereof is spaced apart from the right end of the upper restricting portion 323 by the amount of the overhang width of the overhang portion 327.

When connecting the detection electric wire 30 to the bus bar 310, the detection electric wire 30 is pushed into the inner space of the electric wire enclosure 320 from the receiving port 324, and further drawn to the left to be arranged in the lower space of the upper restricting portion 323. .

In this embodiment, the detection electric wire 30 is relatively thick, and insertion from the rear is difficult as in the third embodiment, but it is relatively easy to bend, and an opening is provided on the right as in the first or second embodiment. It is suitable for the case where there is a concern about dropping off from the electric wire surrounding portion. In addition, since the other structure of this embodiment is the same as that of Embodiment 1, the same code | symbol is attached | subjected about the same member and the overlapping description is abbreviate | omitted.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings, and can be implemented in the following forms, for example.

(1) In the above embodiment, the wire support portion is provided extending from the bus bar body in a band shape, the wire restriction portion is provided with this as a base end, and the detection wire is between the wire restriction portion and the wire support portion. Although it is set as the structure distribute | arranged to space, there may not be an electric wire support part, for example, an electric wire control part is extended directly from the rear end of a bus-bar main body, and it is good also as a structure without an electric wire support part in the downward direction. Moreover, in the said embodiment, although the electric wire control part is set as the structure distribute | arranged behind a bus-bar main body, arrangement | positioning of an electric-wire control part is not restricted to this, You may distribute | arrange above a bus-bar main body. In short, it is only necessary to be able to regulate the upward displacement of the portion of the electric wire that extends from the portion connected to the upper surface of the bus bar.

(2) In Embodiment 1 and Embodiment 2 described above, when the bus bar is accommodated in the insulation protector, the receiving port 24 of the wire surrounding portion is blocked by the restriction wall 52 of the connecting portion 50. When the electric wire 30 is not likely to fall off from the side, the restriction wall 52 may be omitted. This makes it easy to insert a tool or the like into the connecting portion 50 and improves workability. Moreover, in the said embodiment, although the connection surface 50 of the insulation protectors P1 and P2 is provided with the support surface part 51 extended on the same plane from the main body accommodating part 49, it replaces with the support surface part 51, and provides an opening. It is good also as a vent for releasing the heat at the time of energization.

(3) The power storage element 2 is an example of a power element, but the power element is not limited to this and may be, for example, a capacitor or a fuel cell.

(4) In the above embodiment, the core wire of the detection wire is connected to the bus bar by welding. However, the welding method may be any method such as ultrasonic welding or laser welding, and is not limited to welding. , Soldering, brazing, etc. may be used. The technology disclosed in this specification can reliably suppress the peeling force from reaching the welded portion of the detection wire, and can be easily manufactured. Therefore, any connection can be made without considering the peeling strength and the manufacturing cost. Means can be employed.

1: Wiring module 2: Power storage device 3: Power module 10: Bus bar 11: Bus bar body 21: Electric wire support 23: Upper restricting part 24: Receiving port 25: Extension outlet 30: Detecting electric wire 32: Core P: Insulation protector 40: Bus bar housing part 42B: Rear wall 50: Connecting part 52: Restriction wall 60: Electric wire housing part 62A: Mounting recess 70: Cover part 72: Closing wall part 72A: Holding recess 172: Closing plate part

Claims

A bus bar that connects between the plurality of power elements in a power module including a plurality of power elements and to which a detection electric wire for voltage detection is connected,
A bus bar main body to which the core wire of the detection electric wire is connected, and an electric wire restricting portion that regulates the upward displacement of the detection electric wire that is integrally formed in advance in a form covering the bus bar main body and inserted into the lower space thereof. And a bus bar for connecting the detection wires to the plurality of power elements.
The bus bar according to claim 1, wherein the core wire of the detection electric wire is welded to the bus bar main body.
The bus bar according to claim 1, wherein the core wire of the detection electric wire is brazed to the bus bar main body.
The bus bar body is integrally formed with a wire support portion corresponding to a portion of the detection wire that extends to the side of the bus bar body, and the wire restriction portion covers the wire support portion from above. The bus bar according to any one of claims 1 to 3, wherein the bus bar is formed.
In a power module including a plurality of power elements, a bus bar for connecting between the plurality of power elements is accommodated in an insulation protector, and a wiring module in which a detection wire for voltage detection is connected to the bus bar,
The bus bar regulates upward displacement of the detection wire inserted into the space below the bus bar main body to which the core wire of the detection wire is connected and the bus bar main body, which is integrally formed in a form covering the bus bar main body. An electric wire regulating part,
The said insulation protector is equipped with the electric wire fixing part which pinches | interposes and fixes the said detection electric wire extended from the said electric wire control part, The wiring module characterized by the above-mentioned.
The detection electric wire extending from the electric wire regulating portion is placed on the insulation protector, and a cover portion provided on the insulation protector is covered from above, so that the gap between the cover portion and the insulation protector. The wiring module according to claim 5, wherein the wiring module is sandwiched between.
The bus bar body is integrally formed with a wire support portion corresponding to a portion of the detection wire that extends to the side of the bus bar body, and the wire restriction portion covers the wire support portion from above. The wiring module according to claim 5, wherein the insulation protector includes a restriction wall that covers a space between the wire restriction portion and the wire support portion from a side.