Conductive module

Abstract

The conductive module is suitable for circuit protection. The circuit assembly section (24) has: a connector connection section (24a) to which a connector (32) is attached to an end section on the opposite side from the two trunk line sections (21); a through-hole setting section (24b) in which a plurality of through-holes are provided on the two main line section (21) side; and a position offset absorbing part (24c) that absorbs a position offset of the connector (32) in the arrangement direction with respect to a counterpart connector on the battery monitoring unit side between the connector connecting part (24a) and the through-hole setting part (24b), the circuit cover member (60) having: a cover main body (61) that covers the trunk line part (21) from the surface at the assembly completion position; and a through-hole cover section (63) that presses the surface of the through-hole setting section (24b) at the assembly completion position so that the through-hole setting section (24b) intersects so that the angle of the inside bent with respect to the two main line sections (21) becomes an obtuse angle, the through-hole cover section (63) being inclined with respect to the cover main body (61).

Description

TECHNICAL FIELD

[0001] The present application relates to an electrically conductive module. BACKGROUND

[0002] An electrically conductive module is used in a battery module in which a plurality of battery cells are arranged in a row along an arrangement direction, and a plurality of bus bars are used to electrically connect the plurality of battery cells. Also, the electrically conductive module electrically connects each bus bar to a battery monitoring unit via a flat circuit conductor member that is provided with a circuit conductor for each bus bar and has flexibility. The circuit conductor member is, for example, a flexible printed circuit board that has a sheet-shaped insulating layer and a conductor layer provided with a plurality of circuit conductors, is housed together with the bus bars in a housing member, and is covered by a circuit cover member. With such an electrically conductive module, for example, disclosed in Patent Literature 1 described below.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT LITERATURE

[0005] Patent Literature 1: Japanese Patent Application Publication No. 2022-173609 SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE INVENTION

[0007] However, there is a structure in which, in a battery module, electrode terminals of a plurality of battery cells are each arranged in a row on the same plane along an arrangement direction, and a smoke exhaust duct is provided between the two row groups of electrode terminals. In this case, in the conventional electrically conductive module, the circuit conductor member blocks the smoke exhaust duct. Therefore, the circuit conductor member uses a circuit conductor member that has a trunk portion provided so as to extend along the arrangement direction for each group of electrode terminals and in which circuit conductors for each bus bar that are connected to each electrode terminal of the group of electrode terminals are routed, and a circuit collection portion that links each end portion in the arrangement direction of the two trunk portions that avoid the smoke exhaust duct to each other and concentrates the plurality of circuit conductors of the two trunk portions in one place. Here, in the circuit collection portion, there are provided a through-hole setting portion that has a plurality of through-holes, a connector connection portion that is assembled with a connector for electrically connecting the circuit conductors to the battery monitoring unit, and a positional offset absorbing portion that is flexibly deformed in order to absorb a positional offset of the connector with respect to the counterpart connector. In this circuit collection portion, if a force accompanying the flexible deformation of the positional offset absorbing portion is transmitted to the through-hole setting portion, a useless force acts on the through-holes of the through-hole setting portion, and thus it is not preferable.

[0008] Therefore, an object of the present application is to provide an electrically conductive module that is suitable for circuit protection.

[0009] MEANS FOR SOLVING THE PROBLEMS

[0010] The conductive module according to the present application is characterized by comprising: a plurality of bus bars electrically connected to a plurality of battery cells arranged in a row along an arrangement direction in a battery module; a circuit conductor member including a circuit conductor for each of the bus bars, the circuit conductor electrically connecting the bus bar and a battery monitoring unit, the circuit conductor member being flexible and flat; a housing member housing the bus bars and the circuit conductor member from an opening; and a circuit cover member assembled to the housing member at an assembly completion position, covering the circuit conductor member from the opening side, the circuit conductor member including: two trunk portions arranged in opposition at a distance apart in a direction orthogonal to the arrangement direction on the same plane; and a circuit collection portion collecting the circuit conductors of the two trunk portions at one point by joining the respective end portions of the arrangement direction of the two trunk portions to each other, the circuit collection portion including: a connector connecting portion assembling a connector at an end portion on a side opposite to the two trunk portion sides; a through-hole providing portion providing a plurality of through-holes at the two trunk portion sides; and a positional displacement absorbing portion absorbing positional displacement of the connector with respect to a counterpart connector of the battery monitoring unit side in the arrangement direction between the connector connecting portion and the through-hole providing portion, the circuit cover member including: a cover main body covering the trunk portions from a surface at the assembly completion position; and a through-hole cover portion pressing a surface of the through-hole providing portion at the assembly completion position and crossing the through-hole providing portion so that an angle with respect to an inner side bent in the two trunk portions becomes an obtuse angle, the through-hole cover portion being inclined at the angle with respect to the cover main body.

[0011] Effects of the Invention

[0012] In the conductive module according to the present application, the through-hole providing portion is covered from a surface in a state in which the through-hole cover portion of the circuit cover member is inclined at the above-described obtuse angle with respect to the two trunk portions. Therefore, in the conductive module, the through-hole providing portion can be covered and protected by the through-hole cover portion in a state in which a load acting on the through-hole providing portion is reduced. The conductive module can improve durability of the through-holes provided in the through-hole providing portion and the connecting members associated therewith by reducing the load acting on the through-hole providing portion. Therefore, the conductive module according to the present application not only protects the through-hole providing portion from the outside by covering the through-hole providing portion with the through-hole cover portion, but also can protect the through-hole providing portion with improved durability, and is suitable for protection of the circuit of the circuit conductor member. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a perspective view showing the conductive module of the embodiment.

[0014] Figure 2 is an exploded perspective view of the conductive module showing an embodiment.

[0015] Figure 3 is a perspective view of a portion of the conductive module with the cover member removed.

[0016] Figure 4 is a partial enlarged view of the X-X line section of Figure 3

[0017] Figure 5 is a schematic view showing the battery module together with the bus bar.

[0018] Figure 6 is a perspective view showing a main portion of the circuit conductor member.

[0019] Figure 7 is a perspective view showing a main portion of the circuit cover member.

[0020] Figure 8 is a perspective view showing a main portion of the housing member.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 1 conductive module

[0023] 10 bus bar

[0024] 20 circuit conductor member

[0025] 21 trunk portion

[0026] 24 circuit collection portion

[0027] 24a connector connection portion

[0028] 24b through-hole setting portion

[0029] 24c position offset absorbing portion

[0030] 32 connector

[0031] 40 housing member

[0032] 40a opening

[0033] 42 first opposing arrangement surface (opposing arrangement surface)

[0034] 45 latching protrusion portion

[0035] 60 circuit cover member

[0036] 61 cover main body

[0037] 63 through-hole cover portion​

[0038] 63b free end

[0039] 65 contact protrusion

[0040] BC battery cell

[0041] BM Battery Module DETAILED DESCRIPTION

[0042] Hereinafter, an embodiment of the conductive module according to the present invention will be described in detail based on the drawings. However, the present invention is not limited to this embodiment.

[0043] [Example]

[0044] based on Figures 1 to 8 One embodiment of the conductive module according to the present invention will be described.

[0045] Figures 1 to 4 Reference numeral 1 denotes a conductive module of this embodiment. The conductive module 1 is assembled into a battery module BM ( Figure 5 ) electrically connects the multiple battery cells BC in the battery module BM. Furthermore, the conductive module 1 electrically connects the battery module BM to a battery monitoring unit (not shown), allowing the battery monitoring unit to monitor the battery status of the battery cells BC. Together, the conductive module 1 and the battery module BM constitute a battery pack. The battery pack is installed in, for example, a vehicle (BEV, HEV, etc.) equipped with a rotating machine as a driving source, and is used to supply power to the rotating machine.

[0046] The battery cell BC includes a cell body BCa and positive and negative electrode terminals BCb ( Figure 5 ). The battery cell BC shown here is formed into a rectangular parallelepiped with a cell body BCa having 6 outer wall surfaces. Furthermore, among the plurality of battery cells BC constituting the battery module BM, the cell bodies BCa adjacent in the arrangement direction are arranged so that one outer wall surface faces each other. The battery module BM comprises: an electrode terminal group BCc in which the electrode terminals BCb on one side of each battery cell BC are arranged along the arrangement direction; and another electrode terminal group BCc in which the electrode terminals BCb on the other side of each battery cell BC are arranged along the arrangement direction ( Figure 5 ).

[0047] Hereinafter, when the term “arrangement direction” is used unless otherwise specified, it refers to the arrangement direction of the plurality of battery cells BC and the arrangement direction of the plurality of electrode terminals BCb in the electrode terminal group BCc.

[0048] In this example, each battery cell BC has one positive and one negative electrode terminal BCb (1) on one of the six outer wall surfaces of the cell body BCa. Figure 5 ) Thus, in the battery module BM, two electrode terminal groups BCc are arranged apart by a distance on the same plane Figure 5 ) In this battery module BM, an exhaust duct (not shown) is provided between the two electrode terminal groups BCc to exhaust gas from the inside of the battery cell BC to the outside.

[0049] In addition, the electrode terminal BCb shown here is formed in a flat plate shape and is physically and electrically connected to the bus bar 10 described later by welding or the like Figure 5 ) However, the electrode terminal BCb can also be formed in a pole shape having an external threaded portion. In this case, the bus bar 10 is threadably fixed to the electrode terminal BCb by screwing an internal threaded member to the external threaded portion of the electrode terminal BCb.

[0050] The conductive module 1 has a plurality of bus bars 10 that electrically connect a plurality of battery cells BC in the battery module BM Figure 5 ) Furthermore, the conductive module 1 has a circuit conductor member 20 that has a circuit conductor that electrically connects the bus bar 10 and the battery monitoring unit for each bus bar 10, and the circuit conductor member 20 is flexible and flat Figures 1 to 4 ) The conductive module 1 of the present embodiment also has a terminal member 31 that electrically connects the circuit conductor and the bus bar 10 as a connection object for each bus bar 10 Figure 2 ) The conductive module 1 has a housing member 40 that houses the bus bar 10 and the circuit conductor member 20 from an opening 40a Figures 1 to 4 ) The conductive module 1 has a cover member 50 that is assembled to the housing member 40 and closes the opening 40a Figure 1 and Figure 2 ) Furthermore, the conductive module 1 has a circuit cover member 60 that is assembled to the housing member 40 at an assembly completion position, interposed between the circuit conductor member 20 and the cover member 50, and covers the circuit conductor member 20 from the opening 40a side Figures 1 to 4 Here, for example, the circuit conductor member 20 is pre-installed with the terminal member 31 for each bus bar 10, and the circuit conductor member 20 with the terminal member 31 is housed in the housing member 40.

[0051] The bus bars 10 and the terminal fittings 31 are formed of a conductive material such as metal. The circuit conductor member 20 is composed of a conductive material such as metal and an insulating material such as synthetic resin. The housing member 40, the cover member 50, and the circuit cover member 60 are formed of an insulating material such as synthetic resin.

[0052] The bus bar 10 is a plate-shaped conductive member made of metal, for example, formed by press working using a metal plate as a base material. The bus bar 10 shown here is formed in a rectangular flat plate shape.

[0053] The conductive module 1 has, for example, a bus bar physically and electrically connected to adjacent electrode terminals BCb of a pair of battery cells BC in the battery module BM, a bus bar physically and electrically connected to an electrode terminal BCb that is a total negative electrode in the battery module BM, and a bus bar physically and electrically connected to an electrode terminal BCb that is a total positive electrode in the battery module BM, as the bus bar 10.

[0054] As the circuit conductor member 20, for example, a flexible printed circuit board (FPC) formed with a conductor pattern as a circuit conductor for each bus bar 10 is used.

[0055] The circuit conductor member 20 has two trunk portions 21( Figure 2 , Figure 4 and Figure 6 ) disposed in opposition to each other at intervals in a direction orthogonal to the arrangement direction on the same plane. The two trunk portions 21 extend in the arrangement direction. One trunk portion 21 is disposed in lateral arrangement with respect to a plurality of bus bars 10 having each electrode terminal BCb of one electrode terminal group BCc and one electrode terminal group BCc as connection objects, on the exhaust pipe side of the battery module BM. In this one trunk portion 21, the circuit conductor for each of the plurality of bus bars 10 related to the one electrode terminal group BCc is laid along the arrangement direction. The other trunk portion 21 is disposed in lateral arrangement with respect to a plurality of bus bars 10 having each electrode terminal BCb of the other electrode terminal group BCc and the other electrode terminal group BCc as connection objects, on the exhaust pipe side of the battery module BM. In this other trunk portion 21, the circuit conductor for each of the plurality of bus bars 10 related to the other electrode terminal group BCc is laid along the arrangement direction.

[0056] Further, the circuit conductor member 20 has a branch portion 22( Figure 2 and Figure 6). The branch portions 22 are provided on one trunk portion 21 side and the other trunk portion 21 side, respectively. A terminal fitting 31 is provided for each of the branch portions 22, and the terminal fitting 31 is physically and electrically connected to the circuit conductor by welding or the like at the end of the branch portion 22. In addition, the terminal fitting 31 is physically and electrically connected to the busbar 10 by welding or the like.

[0057] In the circuit conductor device 20, one trunk portion 21 and the other trunk portion 21 are connected by a main body connecting portion 23 at a position avoiding the exhaust duct of the battery module BM ( Figure 2 ). The main body connecting portion 23 is provided with one or a plurality of portions according to the length of the arrangement direction of the trunk portion 21.

[0058] In addition, the circuit conductor device 20 has a circuit collection portion 24 that collects the respective circuit conductors of the two trunk portions 21 at one place by connecting the respective end portions of the arrangement directions of the two trunk portions 21 to each other ( Figures 2 to 4 and Figure 6 ). In the circuit conductor device 20, the circuit collection portion 24 is electrically connected to the battery monitoring unit. In addition, for the sake of convenience, Figure 2 and Figure 6 The circuit collection portion 24 shown in Figs. 1 to 3 indicates a state bent by the housing member 40 and the circuit cover member 60 as described later.

[0059] The circuit collection portion 24 has a connector connecting portion 24a that assembles the connector 32 at the end portion on the side opposite to the two trunk portion 21 sides ( Figures 1 to 3 ), and a through-hole providing portion 24b that is provided with a plurality of through-holes on the two trunk portion 21 sides ( Figure 4 and Figure 6 ). Furthermore, the circuit collection portion 24 has a positional displacement absorbing portion 24c that absorbs positional displacement of the connector 32 with respect to the counterpart connector (omitted from illustration) of the battery monitoring unit side in the arrangement direction between the connector connecting portion 24a and the through-hole providing portion 24b ( Figure 3 、 Figure 4 and Figure 6 ). In addition, the circuit collection portion 24 has a connecting portion 24d that connects the end portion of the arrangement direction of one trunk portion 21, the end portion of the arrangement direction of the other trunk portion 21, and the through-hole providing portion 24b to the same plane as the trunk portion 21 ( Figure 4 and Figure 6 ). In the circuit collection portion 24, the connecting portion 24d, the through-hole providing portion 24b, the positional displacement absorbing portion 24c, and the connector connecting portion 24a are arranged in this order in the arrangement direction.

[0060] In the circuit conductor component 20, the two trunk portions 21, the branch portions 22, the main body connecting portion 23, and the circuit assembly portion 24 are formed on the same plane. When the circuit conductor component 20 is housed in the housing member 40 and covered by the circuit cover member 60 and the cover member 50, each branch portion 22 is bent toward the bus bar 10, and the circuit assembly portion 24 is also bent.

[0061] In the conductive module 1, each bus bar housing chamber 41a ( Figure 2 and Figure 3 ) accommodates the busbar 10, places the terminal fittings 31 attached to the circuit conductor member 20 on the busbar 10, and physically and electrically connects the busbar 10 and the terminal fittings 31 for each busbar 10 by welding or the like. The circuit conductor member 20 is accommodated in the accommodation member 40 while bending each branch portion 22, and is covered by the circuit cover member 60 assembled to the accommodation member 40. This conductive module 1 is installed on the battery module BM. In this conductive module 1, after the busbar 10 and the electrode terminal BCb are physically and electrically connected by welding or the like, the cover member 50 is assembled to the accommodation member 40.

[0062] In the circuit conductor member 20, by assembling the receiving member 40 and the circuit cover member 60, the receiving member 40 and the circuit cover member 60 bend the circuit aggregate portion 24. Therefore, here, the receiving member 40 and the circuit cover member 60 are formed as follows.

[0063] The circuit cover member 60 includes a cover body 61 that covers the trunk portion 21 ( Figures 2 to 4 and Figure 7 The cover body 61 is formed into a shape along the arrangement direction. In addition, the cover body 61 is provided for each trunk portion 21.

[0064] In the circuit cover member 60, the cover body 61 on one side and the cover body 61 on the other side are connected by a connecting portion 62 at a position avoiding the exhaust duct of the battery module BM ( Figure 2 One or more connecting portions 62 are provided depending on the length of the cover body 61 in the arrangement direction.

[0065] The circuit cover member 60 includes a through-hole cover portion 63 that covers the through-hole arrangement portion 24b ( Figures 2 to 4 as well as Figure 7). The through-hole cover portion 63 presses the surface of the through-hole provided portion 24b and makes the through-hole provided portion 24b intersect at an obtuse angle with respect to the inner side of the two trunk portions 21 in the assembled completed position with respect to the housing member 40. The through-hole cover portion 63 is formed in a cantilever beam shape inclined at the angle with respect to the cover main body 61. The through-hole cover portion 63 has a pressing surface 63a of the inclined angle, and the pressing force is applied to the surface of the through-hole provided portion 24b from the pressing surface 63a Figure 4

[0066] In addition, the circuit cover member 60 has a connecting cover portion 64 connecting the end portions of the two cover main bodies 61 in the arrangement direction to each other and covering the connecting portion 24d from the surface in the assembled completed position with respect to the housing member 40 Figure 3 Figure 4

[0067] In the conductive module 1, the through-hole provided portion 24b is covered from the surface in a state of being inclined at the above-described obtuse angle with respect to the two trunk portions 21 and the connecting portion 24d by the through-hole cover portion 63 of the circuit cover member 60. Therefore, in the conductive module 1, the through-hole provided portion 24b can be covered and protected by the through-hole cover portion 63 in a state of reducing the load applied to the through-hole provided portion 24b.

[0068] For example, the circuit cover member 60 is assembled to the housing member 40 in an assembly trajectory orthogonal to the arrangement direction and the opposite arrangement direction of the two trunk portions 21. Therefore, in the conductive module 1, the through-hole provided portion 24b is pressed from the surface by the through-hole cover portion 63 until the assembled completed position when the circuit cover member 60 is assembled to the housing member 40, but the pressing force can be reduced. Therefore, in the conductive module 1, the load applied to the through-hole provided portion 24b can be reduced when the circuit cover member 60 is assembled to the housing member 40 (in other words, when the circuit collection portion 24 is bent between the through-hole provided portion 24b and the connecting portion 24d).

[0069] In addition, in the conductive module 1, because the through-hole cover portion 63 is inclined at the above-described obtuse angle with respect to the cover main body 61, the pressable area of the through-hole cover portion 63 with respect to the through-hole provided portion 24b can be enlarged compared to the case where the through-hole cover portion is bent at a right angle with respect to the cover main body 61.

[0070] Here, the housing member 40 has an opposite arrangement surface (hereinafter, referred to as a "first opposite arrangement surface") 42 arranged in parallel to and opposite to the through-hole cover portion 63 of the circuit cover member 60 in the assembled completed position with respect to the through-hole provided portion 24b between the through-hole cover portion 63 and the surface Figure 2 Figure 4 Figure 8 In addition, the circuit cover member 60 has a connecting cover portion 64 connecting the end portions of the two cover main bodies 61 in the arrangement direction to each other and covering the connecting portion 24d from the surface in the assembled completed position with respect to the housing member 40​​​​​

[0071] In addition, the circuit cover member 60 is provided with abutting protrusions 65 that protrude from the free ends 63b of the through-hole cover portions 63 and abut against the housing member 40 in the assembled completed position, and the circuit collection portion 24 is disposed apart from the free ends 63b of the through-hole cover portions 63 and the housing member 40 by a gap in the direction of the free ends 63b of the through-hole cover portions 63 and the housing member 40 Figure 4 Also Figure 7 ) In this case, one abutting protrusion 65 is provided at each of the ends of the free ends 63b of the through-hole cover portions 63 in the direction of the opposed arrangement of the two trunk portions 21. Also, in this case, the end of the through-hole provided portion 24b on the position offset absorbing portion 24c side is disposed between the two abutting protrusions 65 and between the free ends 63b of the through-hole cover portions 63 and the housing member 40. In the circuit collection portion 24, when a force acts on the end of the through-hole provided portion 24b from the position offset absorbing portion 24c side, the force can be released toward the first opposed arrangement face 42 side, and thus the load acting on the through-hole provided portion 24b can be reduced.

[0072] On the other hand, when a force acts on the end of the through-hole provided portion 24b on the position offset absorbing portion 24c side from the position offset absorbing portion 24c side, it is preferable to stop the back surface of the end against the first opposed arrangement face 42. In this case, the back surface of the end of the through-hole provided portion 24b is stopped against the first opposed arrangement face 42 to avoid overloading of the through-hole provided portion 24b due to the force from the position offset absorbing portion 24c side. Thus, the first opposed arrangement face 42 is disposed in opposition to the back surface of the through-hole provided portion 24b with a slight gap.

[0073] In addition, the housing member 40 has an opposed arrangement face (hereinafter referred to as a "second opposed arrangement face") 43 that is formed in parallel with the linking portion 24d and is disposed in opposition to the back surface of the linking portion 24d Figure 4 Also Figure 8 ) Also, the housing member 40 has a positioning protrusion 44 that is provided vertically from the second opposed arrangement face 43 Figure 3 Also Figure 8 ) The linking portion 24d has a through-hole 24e through which the positioning protrusion 44 is inserted Figure 6 ) The circuit conductor member 20 can be positioned when housed in the housing member 40 by inserting the positioning protrusion 44 through the through-hole 24e. In addition, the linking cover portion 64 has an insertion portion 64a into which the positioning protrusion 44 is inserted Figure 7 ) The circuit cover member 60 can be positioned when assembled in the housing member 40 by inserting the positioning protrusion 44 into the insertion portion 64a.

[0074] In addition, the receiving member 40 is provided with a locking protrusion 45, which protrudes further toward the opening 40a than the free end 63b of the through-hole cover 63 in the assembled position, and the end of the locking protrusion 45 on the protruding direction side is locked to the position deviation absorbing portion 24c, and the position deviation absorbing portion 24c is bent to the connector connection portion 24a side and the through-hole setting portion 24b side ( Figures 2 to 4 as well as Figure 8 ).

[0075] In the circuit assembly portion 24, the boundary between the through-hole portion 24b and the misalignment absorbing portion 24c is bent, starting from the free end 63b of the through-hole cover portion 63 in the assembled position, so that the through-hole portion 24b side of the misalignment absorbing portion 24c is inclined toward the distal end of the locking protrusion 45. As a result, the through-hole portion 24b and the through-hole portion 24b side of the misalignment absorbing portion 24c form a V-shape in the circuit assembly portion 24.

[0076] In the circuit assembly 24 shown here, the connector connection portion 24a side of the positional deviation absorbing portion 24c bent at the distal end of the locking protrusion 45 is extended in the arrangement direction, and the connector 32 is assembled to the distal connector connection portion 24a.

[0077] As described above, the conductive module 1 of this embodiment can reduce the load acting on the through-hole portion 24b by using the through-hole cover portion 63 of the circuit cover component 60, thereby improving the durability of the through-hole portion 24b. Therefore, the conductive module 1 of this embodiment not only protects the through-hole portion 24b from the outside by covering it with the through-hole cover portion 63, but also protects the through-hole portion 24b with improved durability, making it suitable for protecting the circuit of the circuit conductor component 20.

Claims

1. An electrically conductive module, characterized in that, Possessing: a plurality of bus bars, the plurality of bus bars being electrically connected to a plurality of battery cells arranged in a row along an arrangement direction in a battery module; a circuit conductor member, the circuit conductor member having a circuit conductor for each of the bus bars, the circuit conductor electrically connecting the bus bar to a battery monitoring unit, the circuit conductor member being flexible and flat; a housing member, the housing member housing the bus bars and the circuit conductor member from an opening; and a circuit cover member, the circuit cover member being assembled to the housing member at an assembly completion position, covering the circuit conductor member from an opening side, the circuit conductor member has: two trunk portions, the two trunk portions being arranged in opposition at a distance apart in a direction orthogonal to the arrangement direction on the same plane; and a circuit collection portion, the circuit collection portion collecting the circuit conductors of the two trunk portions in one place by joining the respective end portions of the arrangement direction of the two trunk portions to each other, the circuit collection portion has: a connector connecting portion, the connector connecting portion assembling a connector at an end portion on a side opposite to the two trunk portion sides; a through-hole providing portion, the through-hole providing portion being provided with a plurality of through-holes on the two trunk portion sides; and a positional displacement absorbing portion, the positional displacement absorbing portion absorbing positional displacement of the connector with respect to a counterpart connector on the battery monitoring unit side in the arrangement direction between the connector connecting portion and the through-hole providing portion, the circuit cover member has: a cover main body, the cover main body covering the trunk portions from a surface at the assembly completion position; and a through-hole cover portion, the through-hole cover portion pressing a surface of the through-hole providing portion at the assembly completion position and causing the through-hole providing portion to intersect so that an angle of an inner side bent with respect to the two trunk portions becomes an obtuse angle, the through-hole cover portion is inclined at the angle with respect to the cover main body.

2. The conductive module according to claim 1, wherein the housing member has an opposing arrangement surface, the opposing arrangement surface being arranged in opposition to a back surface of the through-hole providing portion between the through-hole cover portion of the circuit cover member at the assembly completion position and the through-hole cover portion, the back surface of the end portion of the through-hole providing portion is latched to the opposing arrangement surface when a force is applied to the end portion on the positional displacement absorbing portion side in the through-hole providing portion from the positional displacement absorbing portion side.

3. The conductive module according to claim 1, wherein the cover main body is formed in a shape along the arrangement direction, the through-hole cover portion is formed in a cantilever beam shape inclined at the angle with respect to the cover main body, the circuit cover member is provided with an abutting protrusion portion, the abutting protrusion portion protruding from a free end of the through-hole cover portion and abutting against the housing member at the assembly completion position, the circuit collection portion being arranged at a gap apart from the free end of the through-hole cover portion and the housing member with respect to the free end of the through-hole cover portion and the housing member between the free end of the through-hole cover portion and the housing member.

4. The conductive module according to claim 3, wherein ​ ​ In the housing member, a locking protrusion portion is provided, which protrudes more toward the opening side than the free end of the through-hole cover portion in the assembled completed position, and the position offset absorbing portion is locked at the tip on the protruding direction side, and the position offset absorbing portion is bent toward the connector connecting portion side and the through-hole providing portion side, respectively.

5. The conductive module according to any one of claims 1 to 4, wherein The circuit cover member is assembled to the housing member along an assembly track orthogonal to the arrangement direction and the opposite arrangement direction of the two trunk portions.

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