Conductive module

The conductive module addresses the obstruction of smoke exhaust ducts and stress on via holes by employing a flexible circuit design with angled via hole protection and misalignment management, improving durability and connectivity.

JP2025163761APending Publication Date: 2025-10-30YAZAKI CORP +1
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Patent Information

Application Number
JP2024067264
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-04-18
Publication Date
2025-10-30

AI Technical Summary

Technical Problem

Conventional conductive modules obstruct smoke exhaust ducts in battery modules due to the placement of circuit conductor components, and the transmission of deflection deformation forces to via holes leads to undesirable stress on these components.

Method used

A flexible circuit conductor component with trunk sections arranged perpendicularly, a circuit assembly section connecting these trunks, and a via hole cover section that tilts at an obtuse angle to reduce load on via holes, incorporating a misalignment absorbing section to manage connector misalignment.

Benefits of technology

The conductive module protects via holes by reducing load, enhancing durability and ensuring effective electrical connectivity while maintaining the integrity of the circuit conductor components.

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Abstract

To provide a conductive module suitable for circuit protection.SOLUTION: A circuit assembly portion 24 includes a connector connection portion 24a to which a connector 32 is attached at the end opposite two trunk portions 21, a via hole installation portion 24b in which a plurality of via holes are provided on the two trunk portions 21 side, and a positional deviation absorbing portion 24c that absorbs positional deviation in the arrangement direction of the connector 32 relative to the mating connector on the battery monitoring unit side between the connector connection portion 24a and the via hole installation portion 24b, and a circuit cover member 60 includes a cover main body 61 that covers the main portion 21 from the surface when the assembly is complete, and a via hole cover portion 63 that presses the surface of the via hole installation portion 24b when the assembly is complete and crosses the via hole installation portion 24b so that the inner angle of the bend relative to the two trunk portions 21 is an obtuse angle, and the via hole cover portion 63 is inclined at the angle relative to the cover main body 61.SELECTED DRAWING: Figure 4
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Description

[Technical Field]

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

[0002] The conductive module electrically connects multiple battery cells arranged in a row along the arrangement direction using multiple bus bars in a battery module. The conductive module electrically connects each bus bar to a battery monitoring unit via a flexible, flat circuit conductor component on which a circuit conductor for each bus bar is provided. The circuit conductor component is, for example, a flexible printed circuit board including a sheet-like insulating layer and a conductor layer on which multiple circuit conductors are provided. The circuit conductor component is housed together with the bus bars in a housing member and covered with a circuit cover member. This type of conductive module is disclosed, for example, in Patent Document 1 listed below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-173609 Summary of the Invention [Problem to be solved by the invention]

[0004] Some battery modules have electrode terminals of multiple battery cells arranged in rows on the same plane along the arrangement direction, with a smoke exhaust duct between the two rows of electrode terminal groups. In this case, in conventional conductive modules, the circuit conductor component blocks the smoke exhaust duct. To address this issue, the circuit conductor component includes a trunk section extending in the arrangement direction for each electrode terminal group and including circuit conductors for each bus bar connected to each electrode terminal of the electrode terminal group, and a circuit assembly section connecting the ends of the two trunk sections in the arrangement direction, avoiding the smoke exhaust duct, and gathering the multiple circuit conductors of both trunk sections in one location. The circuit assembly section includes a via hole setting section with multiple via holes, a connector connection section to which a connector is attached for electrically connecting the circuit conductors to the battery monitoring unit, and a misalignment absorbing section that flexes and deforms to absorb misalignment of the connector relative to the mating connector. In this circuit assembly portion, if a force caused by the deflection deformation of the misalignment absorbing portion is transmitted to the via hole setting portion, an unnecessary force will be applied to the via hole in this via hole setting portion, which is undesirable.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a conductive module suitable for circuit protection. [Means for solving the problem]

[0006] The present invention provides a circuit conductor component that is flexible and flat, and that includes a plurality of bus bars that electrically connect a plurality of battery cells that are aligned in a line along the arrangement direction of a battery module, and circuit conductors for each of the bus bars that electrically connect the bus bars to a battery monitoring unit, a housing member that houses the bus bars and the circuit conductor components through an opening, and a circuit cover member that is assembled to the housing member at an assembly completion position and covers the circuit conductor components from the opening side, wherein the circuit conductor component has two trunk sections that are arranged opposite each other on the same plane and spaced apart in a direction perpendicular to the arrangement direction, and a circuit assembly section that connects the respective ends of the two trunk sections in the arrangement direction to each other and gathers the circuit conductors of the two trunk sections into one place, and The path collection section has a connector connection section to which a connector is assembled at the end opposite the two trunk sections, a via hole installation section in which a plurality of via holes are provided on the two trunk sections, and a positional deviation absorption section that absorbs positional deviation of the connector in the arrangement direction relative to the mating connector on the battery monitoring unit side between the connector connection section and the via hole installation section, and the circuit cover member has a cover main body that covers the trunk sections from the surface at the assembly completion position, and a via hole cover section that presses the surface of the via hole installation section at the assembly completion position and crosses the via hole installation section so that the inner angle of the bend relative to the two trunk sections is an obtuse angle, and the via hole cover section is inclined at the angle relative to the cover main body. [Effects of the Invention]

[0007] In the conductive module according to the present invention, the via hole cover portion of the circuit cover member covers the via hole mounting portion from the surface while tilting it at the obtuse angle relative to the two trunk portions. Therefore, in this conductive module, the via hole mounting portion can be covered and protected by the via hole cover portion while reducing the load acting on the via hole mounting portion. By reducing the load acting on the via hole mounting portion, this conductive module can improve the durability of the via holes provided in the via hole mounting portion and the connecting components associated therewith. Therefore, the conductive module according to the present invention not only protects the via hole mounting portion from the outside by covering it with the via hole cover portion, but also protects the via hole mounting portion by improving durability, making it suitable for protecting the circuit of circuit conductor components. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a conductive module according to an embodiment. [Figure 2] FIG. 2 is an exploded perspective view showing the conductive module of the embodiment. [Figure 3] FIG. 3 is a perspective view of a part of the conductive module with the cover member removed. [Figure 4] FIG. 4 is a partially enlarged cross-sectional view taken along line XX in FIG. [Figure 5] FIG. 5 is a schematic diagram showing a battery module together with a bus bar. [Figure 6] FIG. 6 is a perspective view showing a main part of a circuit conductor component. [Figure 7] FIG. 7 is a perspective view showing a main part of the circuit cover member. [Figure 8] FIG. 8 is a perspective view showing a main part of the housing member. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a conductive module according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this embodiment.

[0010] [Embodiment] One embodiment of a conductive module according to the present invention will be described with reference to FIGS.

[0011] Reference numeral 1 in FIGS. 1 to 4 denotes a conductive module of this embodiment. This conductive module 1 is assembled into a battery module BM (FIG. 5) in which a plurality of battery cells BC are arranged in a row along the arrangement direction, and electrically connects the plurality of battery cells BC in this battery module BM. This conductive module 1 also electrically connects the battery module BM to a battery monitoring unit (not shown), allowing the battery monitoring unit to monitor the battery state of the battery cells BC. This conductive module 1, together with the battery module BM, constitutes a battery pack. The battery pack is mounted, for example, on a vehicle (such as a BEV (Battery Electric Vehicle) or a HEV (Hybrid Electric Vehicle)) that has a rotating machine as its driving source, and is used to supply power to the rotating machine.

[0012] Each battery cell BC includes a cell body BCa and positive and negative electrode terminals BCb (FIG. 5). The battery cell BC shown here has a cell body BCa formed in a rectangular shape with six outer wall surfaces. In the battery module BM, adjacent cell bodies BCa in the arrangement direction are arranged with one outer wall surface facing each other. This battery module BM includes one electrode terminal group BCc in which one electrode terminal BCb of each battery cell BC is arranged along the arrangement direction, and another electrode terminal group BCc in which the other electrode terminals BCb of each battery cell BC are arranged along the arrangement direction (FIG. 5).

[0013] Hereinafter, when the term "arrangement direction" is used without any particular mention, it refers to the arrangement direction of a plurality of battery cells BC or the arrangement direction of a plurality of electrode terminals BCb in an electrode terminal group BCc.

[0014] In this example, each battery cell BC has a positive and negative electrode terminal BCb on one of the six outer wall surfaces of the cell body BCa (Fig. 5). Therefore, in the battery module BM, two electrode terminal groups BCc are provided on the same plane with a gap between them (Fig. 5). In this battery module BM, an exhaust duct (not shown) is provided between the two electrode terminal groups BCc to discharge gases emitted from inside the battery cells BC to the outside.

[0015] 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 (FIG. 5). However, the electrode terminal BCb may be formed in a pole column shape with a male screw portion. In this case, the bus bar 10 is fixed to the electrode terminal BCb by screwing a female screw member into the male screw portion of the electrode terminal BCb.

[0016] The conductive module 1 includes a plurality of bus bars 10 that electrically connect a plurality of battery cells BC in a battery module BM (FIG. 5). The conductive module 1 includes circuit conductors for each bus bar 10 that electrically connect the bus bars 10 to a battery monitoring unit, and includes flexible, flat circuit conductor components 20 (FIGS. 1 to 4). The conductive module 1 of this embodiment also includes terminal fittings 31 for each bus bar 10 that electrically connect the circuit conductors to the bus bars 10 to be connected (FIG. 2). The conductive module 1 includes a housing member 40 that houses the bus bars 10 and the circuit conductor components 20 through openings 40a (FIGS. 1 to 4). The conductive module 1 includes a cover member 50 that is assembled to the housing member 40 and closes the openings 40a (FIGS. 1 and 2). Furthermore, the conductive module 1 includes a circuit cover member 60 that is assembled to the accommodating member 40 in the assembly completion position and is interposed between the circuit conductor components 20 and the cover member 50 to cover the circuit conductor components 20 from the opening 40a side (FIGS. 1 to 4). Here, for example, terminal fittings 31 for each bus bar 10 are attached to the circuit conductor components 20 in advance, and the circuit conductor components 20 with the terminal fittings 31 are accommodated in the accommodating member 40.

[0017] The busbar 10 and the terminal fitting 31 are made of a conductive material such as metal. The circuit conductor component 20 is made of a conductive material such as metal and an insulating material such as synthetic resin. The accommodating member 40, the cover member 50, and the circuit cover member 60 are made of an insulating material such as synthetic resin.

[0018] The bus bar 10 is a metal plate-shaped conductive component, and is formed by press-forming, for example, a metal plate as a base material. The bus bar 10 shown here is formed in a rectangular flat plate shape.

[0019] The conductive module 1 includes, as the busbars 10, one that is physically and electrically connected to adjacent electrode terminals BCb of a pair of battery cells BC in the battery module BM, one that is physically and electrically connected to the electrode terminal BCb that serves as the total negative electrode in the battery module BM, and one that is physically and electrically connected to the electrode terminal BCb that serves as the total positive electrode in the battery module BM.

[0020] As the circuit conductor component 20, for example, a flexible printed circuit board (FPC) in which a conductor pattern as a circuit conductor is formed for each bus bar 10 is used.

[0021] This circuit conductor component 20 has two trunk portions 21 arranged opposite to each other on the same plane with a gap therebetween in a direction perpendicular to the arrangement direction (FIGS. 2, 4, and 6). The two trunk portions 21 extend in the arrangement direction. One trunk portion 21 is arranged along the bus bars 10 that are to be connected to one electrode terminal group BCc and each electrode terminal BCb in one electrode terminal group BCc, and is arranged side by side with these on the exhaust duct side of the battery module BM. In this one trunk portion 21, circuit conductors for each of the bus bars 10 related to that one electrode terminal group BCc are wired along the arrangement direction. The other trunk portion 21 is arranged along the bus bars 10 that are to be connected to the other electrode terminal group BCc and each electrode terminal BCb in the other electrode terminal group BCc, and is arranged side by side with these on the exhaust duct side of the battery module BM. In this other trunk portion 21, circuit conductors for each of the bus bars 10 related to the other electrode terminal group BCc are wired along the arrangement direction.

[0022] Furthermore, the circuit conductor component 20 has branch portions 22 where the circuit conductor branches off from the trunk portion 21 for each busbar 10 (FIGS. 2 and 6). The branch portions 22 are provided on both the side of one trunk portion 21 and the side of the other trunk portion 21. A terminal fitting 31 is provided for each branch portion 22, and is physically and electrically connected to the circuit conductor at the tip of the branch portion 22 by welding or the like. The terminal fitting 31 is also physically and electrically connected to the busbar 10 by welding or the like.

[0023] In this circuit conductor component 20, one trunk portion 21 and the other trunk portion 21 are connected by a main body connecting portion 23 at a position that avoids the exhaust duct of the battery module BM (FIG. 2). One or more main body connecting portions 23 are provided depending on the length of the trunk portions 21 in the arrangement direction.

[0024] Furthermore, the circuit conductor component 20 has a circuit assembly 24 that connects the ends of the two trunk portions 21 in the arrangement direction and gathers the circuit conductors of the two trunk portions 21 in one place (FIGS. 2 to 4 and 6). In the circuit conductor component 20, this circuit assembly 24 is electrically connected to the battery monitoring unit. For ease of explanation, the circuit assembly 24 shown in FIGS. 2 and 6 is shown in a bent state by the housing member 40 and the circuit cover member 60, as will be described later.

[0025] The circuit assembly 24 has a connector connection portion 24a to which a connector 32 (FIGS. 1 to 3) is attached at the end opposite the two trunk lines 21, and a via hole installation portion 24b on the two trunk lines 21 side where a plurality of via holes are provided (FIGS. 4 and 6). The circuit assembly 24 has a misalignment absorbing portion 24c between the connector connection portion 24a and the via hole installation portion 24b that absorbs misalignment in the arrangement direction of the connector 32 relative to the mating connector (not shown) on the battery monitoring unit side (FIGS. 3, 4 and 6). The circuit assembly 24 also has a connecting portion 24d that connects an end of one trunk line 21 in the arrangement direction to an end of the other trunk line 21 in the arrangement direction and the via hole installation portion 24b on the same plane as the trunk lines 21 (FIGS. 4 and 6). In this circuit assembly 24, a connecting portion 24d, a via hole installation portion 24b, a positional deviation absorbing portion 24c, and a connector connection portion 24a are arranged in this order in the arrangement direction.

[0026] In the circuit conductor component 20, the two trunk portions 21, the branch portion 22, the main body connecting portion 23, and the circuit assembly portion 24 are formed on the same plane. When this circuit conductor component 20 is housed in the housing member 40 and covered with the circuit cover member 60 and the cover member 50, each of the branch portions 22 is bent toward the bus bar 10, and the circuit assembly portion 24 is also bent.

[0027] In the conductive module 1, the bus bars 10 are accommodated in the respective bus bar accommodating chambers 41a (FIGS. 2 and 3) of the main body 41 of the accommodating member 40, the terminal fittings 31 attached to the circuit conductor components 20 are placed on the bus bars 10, and the bus bars 10 and the terminal fittings 31 are physically and electrically connected to each other by welding or the like. The circuit conductor components 20 are accommodated in the accommodating member 40 while their respective branch portions 22 are bent, and are covered by a circuit cover member 60 attached to the accommodating member 40. This conductive module 1 is placed on the battery module BM. In this conductive module 1, the bus bars 10 and the electrode terminals BCb are physically and electrically connected to each other by welding or the like, and then the cover member 50 is attached to the accommodating member 40.

[0028] In the circuit conductor component 20, the accommodating member 40 and the circuit cover member 60 are assembled together, and the circuit assembly portion 24 is bent by the accommodating member 40 and the circuit cover member 60. Therefore, in this example, the accommodating member 40 and the circuit cover member 60 are formed as follows.

[0029] The circuit cover member 60 has a cover body 61 that covers the front surface of the main line portion 21 when the circuit cover member 60 is in the assembled position relative to the housing member 40 (FIGS. 2 to 4 and 7). The cover body 61 is formed in a shape that is aligned with the arrangement direction. The cover body 61 is provided for each main line portion 21.

[0030] In this circuit cover member 60, one cover body 61 and the other cover body 61 are connected by a connecting portion 62 at a position that avoids the exhaust duct of the battery module BM (FIG. 2). One or more connecting portions 62 are provided depending on the length of the cover body 61 in the arrangement direction.

[0031] This circuit cover member 60 has a via hole cover portion 63 that covers the surface of the via hole mounting portion 24b when it is in the position where it has been completely assembled to the accommodating member 40 (FIGS. 2 to 4 and 7). This via hole cover portion 63 presses against the surface of the via hole mounting portion 24b when it is in the position where it has been completely assembled to the accommodating member 40, and crosses the via hole mounting portion 24b so that the inner angle of the bend is obtuse with respect to the two trunk portions 21. This via hole cover portion 63 is formed in a cantilever shape that is inclined at that angle relative to the cover body 61. This via hole cover portion 63 has a pressing surface 63a at that inclination angle, and a pressing force is applied from this pressing surface 63a to the surface of the via hole mounting portion 24b (FIG. 4).

[0032] In addition, this circuit cover member 60 has a connecting cover portion 64 that connects the ends of the two cover bodies 61 in the arrangement direction and covers the connecting portion 24d from the surface when the assembly to the accommodating member 40 is completed (Figures 3 and 4).

[0033] In this conductive module 1, the via hole mounting portion 24b is covered from the surface by the via hole cover portion 63 of the circuit cover member 60 in a state in which the via hole mounting portion 24b is tilted at the obtuse angle relative to the two trunk line portions 21 and the connecting portion 24d. Therefore, in this conductive module 1, the via hole mounting portion 24b can be covered and protected by the via hole cover portion 63 in a state in which the load acting on the via hole mounting portion 24b is reduced.

[0034] For example, the circuit cover member 60 is assembled to the accommodating member 40 along an assembly trajectory perpendicular to the arrangement direction and the opposing arrangement direction of the two main line portions 21. Therefore, in the conductive module 1, when assembling the circuit cover member 60 to the accommodating member 40, the via hole cover portion 63 presses the via hole mounting portion 24b from the surface until the assembly is completed, but this pressing force can be reduced. Therefore, in the conductive module 1, when assembling the circuit cover member 60 to the accommodating member 40 (in other words, when bending the circuit assembly portion 24 between the via hole mounting portion 24b and the connecting portion 24d), the load acting on the via hole mounting portion 24b can be reduced.

[0035] Furthermore, in this conductive module 1, the via hole cover portion 63 is inclined at the above-mentioned obtuse angle relative to the cover body 61, so that the area over which the via hole cover portion 63 can press against the via hole installation portion 24b can be made larger compared to a case in which the via hole cover portion is bent at a right angle relative to the cover body 61.

[0036] Here, the accommodating member 40 has an opposing arrangement surface (hereinafter referred to as the "first opposing arrangement surface") 42 that is parallel to the via hole cover portion 63 of the circuit cover member 60 in the assembled position and is positioned opposite the back surface of the via hole installation portion 24b between this via hole cover portion 63 (Figures 2, 4 and 8).

[0037] The circuit cover member 60 is provided with abutment protrusions 65 that protrude from the free end 63b of the via hole cover portion 63 and abut against the accommodating member 40 at the completed assembly position, thereby positioning the circuit assembly 24 between the free end 63b of the via hole cover portion 63 and the accommodating member 40 with a gap therebetween (FIGS. 4 and 7). Here, one abutment protrusion 65 is provided at each end of the free end 63b of the via hole cover portion 63 in the opposing arrangement direction of the two trunk portions 21. Here, the end of the via hole installation portion 24b on the side of the misalignment absorbing portion 24c is positioned between the two abutment protrusions 65 and between the free end 63b of the via hole cover portion 63 and the accommodating member 40. In the circuit assembly section 24, when a force acts on the end of the via hole installation section 24b from the positional deviation absorption section 24c side, the force can be dissipated to the first opposing arrangement surface 42 side, thereby reducing the load acting on the via hole installation section 24b.

[0038] On the other hand, when a force is applied from the misalignment absorbing section 24c side to the end of the via hole mounting section 24b, it is desirable to lock the back surface of the end to the first opposing arrangement surface 42. Here, to prevent an overload from being applied to the via hole mounting section 24b by the force from the misalignment absorbing section 24c side, the back surface of the end of the via hole mounting section 24b is locked to the first opposing arrangement surface 42. Therefore, the first opposing arrangement surface 42 is arranged opposite the back surface of the via hole mounting section 24b with a small gap therebetween.

[0039] The accommodating member 40 has an opposing arrangement surface (hereinafter referred to as a "second opposing arrangement surface") 43 that is formed parallel to the connecting portion 24d and that is arranged opposite the back surface of the connecting portion 24d (FIGS. 4 and 8). The accommodating member 40 has a positioning protrusion 44 that extends downward from the second opposing arrangement surface 43 (FIGS. 3 and 8). The connecting portion 24d has a through hole 24e through which the positioning protrusion 44 is inserted (FIG. 6). The circuit conductor component 20 can be positioned when accommodated in the accommodating member 40 by inserting the positioning protrusion 44 into the through hole 24e. The connecting cover portion 64 has a fitting portion 64a into which the positioning protrusion 44 is fitted (FIG. 7). The circuit cover member 60 can be positioned when assembled to the accommodating member 40 by fitting the positioning protrusion 44 into the fitting portion 64a.

[0040] In addition, the accommodating member 40 is provided with a locking protrusion 45 that protrudes toward the opening 40a beyond the free end 63b of the via hole cover portion 63 in the assembled position, and locks the misalignment absorbing portion 24c at the tip of the protruding side, bending the misalignment absorbing portion 24c to separate it into the connector connection portion 24a side and the via hole installation portion 24b side (Figures 2 to 4 and 8).

[0041] In the circuit assembly portion 24, the boundary between the via hole installation portion 24b and the misalignment absorbing portion 24c is bent starting from the free end 63b of the via hole cover portion 63 in the assembly completion position, and the via hole installation portion 24b side of the misalignment absorbing portion 24c is tilted toward the tip of the locking protrusion 45. As a result, in the circuit assembly portion 24, the via hole installation portion 24b and the via hole installation portion 24b side of the misalignment absorbing portion 24c are formed into a V shape.

[0042] In the circuit assembly 24 shown here, the connector connection portion 24a side of the misalignment absorbing portion 24c bent at the tip of the locking protrusion 45 extends in the arrangement direction, and the connector 32 is assembled to the connector connection portion 24a at the end thereof.

[0043] As described above, the conductive module 1 of this embodiment can reduce the load acting on the via hole mounting portion 24b by the via hole cover portion 63 of the circuit cover member 60, thereby improving the durability of this via hole mounting portion 24b. Therefore, the conductive module 1 of this embodiment not only protects the via hole mounting portion 24b from the outside by covering it with the via hole cover portion 63, but also protects the via hole mounting portion 24b as a result of improved durability, making it suitable for protecting the circuit of the circuit conductor component 20. [Explanation of symbols]

[0044] 1 Conductive Module 10 Bus Bar 20 Circuit conductor parts 21 Main Line 24 Circuit assembly section 24a Connector connection part 24b Via hole installation area 24c Positional deviation absorption part 32 connectors 40 Storage member 40a opening 42 First opposing arrangement surface (opposing arrangement surface) 45 Locking protrusion 60 Circuit cover member 61 Cover body 63 Via hole cover 63b free end 65 Contact protrusion BC battery cell BM battery module

Claims

1. a plurality of bus bars that electrically connect a plurality of battery cells that are aligned in a row along the arrangement direction of the battery module; a circuit conductor part that includes a circuit conductor for each bus bar that electrically connects the bus bar to a battery monitoring unit, and that is formed flat and flexible; a housing member that houses the bus bar and the circuit conductor component through an opening; a circuit cover member that is attached to the housing member at an assembly completion position and covers the circuit conductor component from the opening side; Equipped with The circuit conductor component includes two trunk portions arranged opposite to each other with a gap therebetween in a direction perpendicular to the arrangement direction on the same plane, and a circuit assembly portion that connects the respective ends of the two trunk portions in the arrangement direction to each other and gathers the circuit conductors of the two trunk portions into one location, The circuit assembly section has a connector connection section to which a connector is attached at an end opposite to the two trunk line sections, a via hole installation section in which a plurality of via holes are provided on the two trunk line sections, and a positional deviation absorption section that absorbs positional deviation of the connector in the arrangement direction relative to a mating connector on the battery monitoring unit side between the connector connection section and the via hole installation section, the circuit cover member has a cover body that covers the trunk portion from the surface at the assembly completion position, and a via hole cover portion that presses the surface of the via hole placement portion at the assembly completion position and crosses the via hole placement portion so that an inner angle of the bend relative to the two trunk portions becomes an obtuse angle, The conductive module is characterized in that the via hole cover portion is inclined at the angle relative to the cover body.

2. the accommodation member has an opposing arrangement surface that is parallel to the via hole cover portion of the circuit cover member in the assembly completion position and that is arranged to face a back surface of the via hole installation portion between the via hole cover portion of the circuit cover member in the assembly completion position, The conductive module of claim 1, characterized in that the opposing arrangement surface engages the back surface of the end portion of the via hole installation portion on the side of the misalignment absorbing portion when force acts on the end portion from the side of the misalignment absorbing portion.

3. The cover body is formed in a shape that is aligned with the arrangement direction, the via hole cover portion is formed in a cantilever shape inclined at the angle relative to the cover body, The conductive module described in claim 1, characterized in that the circuit cover member is provided with an abutment protrusion that protrudes from the free end of the via hole cover portion and abuts against the accommodating member at the completed assembly position, thereby positioning the circuit assembly portion between the free end of the via hole cover portion and the accommodating member with a gap between them.

4. The conductive module described in claim 3, characterized in that the accommodating member is provided with a locking protrusion portion that protrudes toward the opening beyond the free end of the via hole cover portion in the completed assembly position, and engages the misalignment absorbing portion at the tip of the protruding direction, thereby bending the misalignment absorbing portion separately toward the connector connection portion side and the via hole installation portion side.

5. A conductive module described in any one of claims 1 to 4, characterized in that the circuit cover member is assembled to the accommodating member along an assembly trajectory perpendicular to the arrangement direction and the opposing arrangement direction of the two main line portions.

Citation Information

Patent Citations

  • Bus bar module

    JP2022173609A