Battery wiring module

Abstract

The battery wiring module (10) includes a housing having a first housing body (21) having a first wire insertion portion (31) in a groove shape, a second housing body (22) having a second wire insertion portion (41) in a groove shape, a first cover (23) covering an opening of the first wire insertion portion (31), and a second cover (24) covering an opening (46) of the second wire insertion portion (41). The first wire insertion portion (31) and the second wire insertion portion (41) are arranged along the length direction of the wire. In addition, the opening of the first wire insertion portion (31) and the opening (46) of the second wire insertion portion (41) are opened in the same direction. Furthermore, the housing has an overlapping portion (70) in which the first cover (23) and the second cover (24) overlap each other in the opening direction of the openings (46) of the first and second wire insertion portions (31, 41).

Description

Technical Field

[0001] This disclosure relates to a battery wiring module. Background Technology

[0002] For example, as disclosed in Patent Document 1, in vehicles such as electric vehicles and hybrid vehicles, a battery wiring module is installed in a high-voltage secondary battery that serves as a power source for driving. The battery wiring module of Patent Document 1 includes wires electrically connected to the secondary battery and a housing for housing the wires. The housing of the battery wiring module has multiple housing bodies arranged along the length of the wires and multiple covers corresponding to each housing body. Each housing body has a slotted wire insertion portion through which the power supply wire passes, and each cover covers the wire insertion portion of the corresponding housing body. The covers protect the wires passing through the wire insertion portions of the housing bodies. With this structure, for example, when the secondary battery thermally expands along the length of the wires, each housing body and each cover moves along the length of the wires following the thermal expansion of the secondary battery, thus ensuring high reliability of the connection between the secondary battery and the battery wiring module.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2013-161566 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In the aforementioned battery wiring module, when the spacing between the main housings along the length of the wires widens due to thermal expansion of the secondary battery, the spacing between the covers that move together with the main housings also widens, and the wires may be exposed through the gaps between the covers.

[0008] Therefore, the object of the present invention is to provide a battery wiring module that can prevent wires from being exposed between the covers of the wire insertion portion covering the housing body.

[0009] Solution for solving the problem

[0010] The battery wiring module disclosed herein is a battery wiring module assembled on a secondary battery, comprising: a wire electrically connected to the secondary battery; and a housing for housing the wire, the housing having: a first housing body having a groove-shaped first wire insertion portion for the wire to pass through; a second housing body having a groove-shaped second wire insertion portion for the wire to pass through; a first cover covering the opening of the first wire insertion portion; and a second cover covering the opening of the second wire insertion portion, the first wire insertion portion and the second wire insertion portion being arranged along the length direction of the wire, the openings of the first wire insertion portion and the second wire insertion portion opening in the same direction, the housing having an overlapping portion, the overlapping portion being configured such that the first cover and the second cover overlap each other in the opening directions of the two openings.

[0011] The effects of the invention

[0012] According to this disclosure, a battery wiring module is provided that can prevent wires from being exposed between each other from the wire insertion portion covering the main body of the housing. Attached Figure Description

[0013] Figure 1 This is a perspective view of the battery wiring module in the implementation method.

[0014] Figure 2 This is a top view showing the state of the battery wiring module after the first and second covers have been removed.

[0015] Figure 3 This is an enlarged perspective view showing a portion of the battery wiring module in this manner.

[0016] Figure 4 This is an enlarged perspective view showing a portion of the battery wiring module in this manner.

[0017] Figure 5 This is a 3D diagram illustrating the function of the battery wiring module in this method.

[0018] Figure 6 This is a 3D diagram illustrating the function of the battery wiring module in this method. Detailed Implementation

[0019] [Description of embodiments of this disclosure]

[0020] First, embodiments of this disclosure will be described.

[0021] The battery wiring module disclosed herein is configured as follows:

[0022] [1] A battery wiring module, assembled in a secondary battery, includes: a wire electrically connected to the secondary battery; and a housing for housing the wire, the housing having: a first housing body having a groove-shaped first wire insertion portion for the wire to pass through; a second housing body having a groove-shaped second wire insertion portion for the wire to pass through; a first cover covering the opening of the first wire insertion portion; and a second cover covering the opening of the second wire insertion portion, the first wire insertion portion and the second wire insertion portion being arranged along the length direction of the wire, the opening of the first wire insertion portion and the opening of the second wire insertion portion opening in the same direction, the housing having an overlapping portion, the overlapping portion being configured such that the first cover and the second cover overlap each other in the opening direction of the two openings.

[0023] According to this structure, even if the distance between the first housing body and the second housing body along the length of the wire widens due to thermal expansion of the secondary battery, the overlapping portion can prevent a gap from forming between the first and second covers. Therefore, it is possible to prevent the wire from protruding between the first and second covers. In addition, by preventing a gap from forming between the first and second covers by the overlapping portion, it is possible to prevent the wire from flying out to the outside through the gap between the first and second covers.

[0024] [2] The first cover has an extension that extends to cover the opening of the second wire insertion portion to form the overlapping portion.

[0025] According to this structure, the extension of the first cover can form an overlapping portion where the first cover and the second cover overlap.

[0026] [3] The extension has a locking portion that locks against the second housing body in the direction along the opening direction of the two openings.

[0027] According to this structure, by locking the locking part to the second housing body, it is possible to suppress the floating of the extension of the first cover, that is, the extension of the first cover leaving the second wire insertion part along the opening direction.

[0028] [4] The locking part is provided at the top end of the extension.

[0029] According to this structure, by locking the locking part to the second housing body, it is possible to further suppress the floating of the extension of the first cover, that is, the situation where the extension of the first cover leaves the second wire insertion part along the opening direction.

[0030] [5] The locking part is configured to be movable relative to the second housing body in a direction along the length of the wire.

[0031] According to this structure, the extension of the first cover is locked to the second housing body, and the second housing body can be moved relative to it according to the thermal expansion of the secondary battery.

[0032] [6] The portion of the second cover in the overlapping portion is located inside the second wire insertion portion.

[0033] According to this structure, since the portion of the second cover in the overlap between the first cover and the second cover is located inside the second wire insertion portion, the overlap between the first cover and the second cover can be formed without making the housing larger in the opening direction of the second wire insertion portion.

[0034] [Details of the embodiments disclosed herein]

[0035] Hereinafter, specific examples of the battery wiring module of this disclosure will be described with reference to the accompanying drawings. In the drawings, for ease of explanation, sometimes a portion of the structure is shown exaggeratedly or simplified. Furthermore, the dimensional ratios of the various parts may differ in different drawings. Additionally, the term "orthogonal" in this specification includes not only strictly orthogonal cases but also cases where they are substantially orthogonal to the extent that they serve the function and effect of this embodiment. Moreover, the invention is not limited to these examples, but is shown by the claims and is intended to include all modifications with the same meaning and scope as the claims.

[0036] like Figure 1 As shown, the battery wiring module 10 of this embodiment is, for example, assembled in a secondary battery BT installed in an electric vehicle, hybrid vehicle, or the like. The secondary battery BT supplies power to a vehicle's drive motor (not shown). Furthermore, the secondary battery BT receives power from the drive motor and the generator motor depending on the charging state and the vehicle's operating state.

[0037] The secondary battery BT comprises multiple battery cells C. The secondary battery BT is formed into a generally cuboid shape by arranging the multiple battery cells C in one direction. A battery wiring module 10 is mounted on one side of the secondary battery BT. In the following description, the side of the secondary battery BT on which the battery wiring module 10 is mounted will be referred to as the upper surface, and the side of the battery wiring module 10 relative to the secondary battery BT will be described as the upper side. Furthermore, in the mutually orthogonal XYZ axes in the accompanying drawings, the X-axis represents the long side direction X of the housing 12 of the battery wiring module 10, the Y-axis represents the width direction Y of the housing 12, and the Z-axis represents the height direction Z of the housing 12. Each battery cell C is arranged along the long side direction X of the battery wiring module 10.

[0038] like Figure 1 and Figure 2As shown, the battery wiring module 10 includes multiple wires 11 electrically connected to the secondary battery BT, and a housing 12 for storing the wires 11. Additionally, Figure 1 The diagram of wire 11 is omitted.

[0039] Furthermore, the battery wiring module 10 of this embodiment includes, for example, a plurality of busbars 13 supported by a housing 12. For example, multiple busbars 13 are arranged along the longitudinal direction X of the housing 12 on both sides of the width direction Y of the housing 12. Each busbar 13 is connected to a positive terminal and a negative terminal (not shown) disposed on the upper surface of each battery cell C.

[0040] like Figure 2 As shown, each busbar 13 is electrically connected to its corresponding wire 11. Each wire 11 is inserted into the interior of the housing 12 along its long side X. A portion of the multiple wires 11 are led out of the housing 12 from a first wire guide 14 located at one end of the housing 12 along its long side X, and the remaining multiple wires 11 are led out of the housing 12 from a second wire guide 15 located at the other end of the housing 12 along its long side X.

[0041] (Shell 12)

[0042] like Figure 1 As shown, the housing 12 includes: a first housing body 21 and a second housing body 22 arranged along the long side direction X of the housing 12; and a first cover 23 and a second cover 24 corresponding to the first housing body 21 and the second housing body 22, respectively. The first housing body 21 and the second housing body 22 are formed separately from each other. In addition, the first cover 23 and the second cover 24 are formed separately from each other. Furthermore, the first housing body 21, the second housing body 22, the first cover 23, and the second cover 24 are, for example, made of synthetic resin.

[0043] The housing 12 of this embodiment includes a pair of first housing bodies 21. A second housing body 22 is disposed between the pair of first housing bodies 21. The pair of first housing bodies 21 and the second housing body 22 are arranged in the longitudinal direction X of the housing 12. In addition, one of the first housing bodies 21 has a first wire outlet 14, and the other first housing body 21 has a second wire outlet 15.

[0044] (First shell body 21)

[0045] like Figure 2 As shown, each first housing body 21 has a slot-shaped first wire insertion portion 31 through which the power supply line 11 passes. Additionally, Figure 2 This is a top view of the battery wiring module 10 after the first cover 23 and the second cover 24 have been removed.

[0046] The first wire insertion portion 31 extends along the long side direction X of the housing 12. Furthermore, the first housing body 21 of this embodiment, for example, has two first wire insertion portions 31 arranged in the width direction Y of the housing 12. The two first wire insertion portions 31 are connected to each other via a first connecting portion 32.

[0047] Each first wire insertion portion 31 has a first bottom wall portion 33, a pair of first side wall portions 34 extending upward from the first bottom wall portion 33, and a plurality of first locking portions 35 disposed on each first side wall portion 34. The pair of first side wall portions 34 are opposite each other in the width direction Y. The first wire insertion portion 31 is formed into a groove shape by the first bottom wall portion 33 and each first side wall portion 34. A wire 11 is inserted between each first side wall portion 34. The plurality of first locking portions 35 are configured to protrude from the outer surface of each first side wall portion 34.

[0048] The first wire insertion portion 31 has an opening 36 on the open side of each first sidewall portion 34, that is, on the upper end side of each first sidewall portion 34, which is orthogonal to the insertion direction of the wire 11. In other words, the opening 36 of the first wire insertion portion 31 in this embodiment opens upward.

[0049] (Second shell body 22)

[0050] The second housing body 22 has a slot-shaped second wire insertion portion 41 through which the power supply line 11 passes. The second wire insertion portion 41 extends along the long side direction X of the housing 12. In addition, the second housing body 22 of this embodiment has, for example, two second wire insertion portions 41 arranged in the width direction Y of the housing 12. The two second wire insertion portions 41 are connected to each other by a second connecting portion 42.

[0051] Each second wire insertion portion 41 has a second bottom wall portion 43, a pair of second side wall portions 44 extending upward from the second bottom wall portion 43, and a second locking portion 45 disposed on each second side wall portion 44. The pair of second side wall portions 44 are opposite each other in the width direction Y. The second wire insertion portion 41 is formed into a groove shape by the second bottom wall portion 43 and each second side wall portion 44. A wire 11 is inserted between each second side wall portion 44. The plurality of second locking portions 45 are configured to protrude from the outer surface of each second side wall portion 44.

[0052] The second wire insertion portion 41 has an opening 46 on the open side of each second side wall portion 44, that is, on the upper end side of each second side wall portion 44, which is orthogonal to the insertion direction of the wire 11. In other words, the opening 46 of the second wire insertion portion 41 in this embodiment opens upward.

[0053] The first wire insertion portion 31 of each first housing body 21 and the second wire insertion portion 41 of each second housing body 22 are arranged along the long side direction X of the housing 12. In addition, the opening 36 of the first wire insertion portion 31 and the opening 46 of the second wire insertion portion 41 open in the same direction.

[0054] (First Cover 23)

[0055] like Figure 1 and Figure 3 As shown, in this embodiment, four first covers 23 are provided corresponding to the two first wire insertion portions 31 in the two first housing bodies 21. The first covers 23 are assembled to the first housing bodies 21 in such a way that they cover the openings 36 of the first wire insertion portions 31. The first covers 23 have first locking portions 51 that lock into the first locking portions 35 of the first wire insertion portions 31. Multiple first locking portions 51 are provided corresponding to the multiple first locking portions 35 of the first wire insertion portions 31. The first locking portions 51 lock into the first locking portions 35 in the direction along the opening direction of the openings 36 of the first wire insertion portions 31, i.e., the height direction Z. Thus, the first covers 23 are assembled to the first wire insertion portions 31. In addition, the first locking portions 51 are provided on both sides of the width direction Y of the first covers 23.

[0056] The first cover 23 has an extension 52 that extends along its long side in the direction X to a position that covers the opening 46 of the second wire insertion part 41. The extension 52 is located above the second wire insertion part 41, that is, outside the second wire insertion part 41, and covers the upper side of the opening 46 of the second wire insertion part 41.

[0057] The extension portion 52 has a second locking portion 53 that engages with the side of the second housing body 22. The second locking portion 53 is provided at the top end portion 52a in the long side direction X of the extension portion 52. The second locking portion 53 engages with a portion of a plurality of second locked portions 45. The second locking portion 53 engages with the second locked portion 45 in the direction along the opening direction of the opening 46 of the second wire insertion portion 41, i.e., in the height direction Z. In addition, the second locking portion 53 is provided on both sides in the width direction Y of the extension portion 52.

[0058] The second locking portion 53 is configured to be movable relative to the second locked portion 45 of the second wire insertion portion 41 in the direction along the length of the wire 11, i.e., in the long side direction X of the housing 12. Specifically, a gap is provided between the second locking portion 53 and the second locked portion 45 in the long side direction X of the housing 12.

[0059] (Second cover 24)

[0060] like Figure 3 and Figure 4As shown, in this embodiment, two second covers 24 are provided corresponding to the two second wire insertion portions 41 in the second housing body 22. The second cover 24 is assembled to the second housing body 22 in such a way that it covers the opening 46 of the second wire insertion portion 41. The second cover 24 has a third locking portion 61 that locks into the second locking portion 45 of the second wire insertion portion 41. The third locking portion 61 locks into the second locking portion 45 in the direction along the opening direction of the opening 46 of the second wire insertion portion 41, that is, in the height direction Z. Thus, the second cover 24 is assembled to the second wire insertion portion 41. In addition, the third locking portion 61 is provided on both sides of the second cover 24 in the width direction Y.

[0061] The ends 24a of the second cover 24 in the long side direction X are located below the extension 52 of the first cover 23. Furthermore, the two ends 24a of the second cover 24 are located between a pair of second sidewall portions 44. That is, the two ends 24a of the second cover 24 are located inside the second wire insertion portion 41.

[0062] Both ends 24a of the second cover 24 overlap with the extension 52 of the first cover 23 in the direction of the opening 46 of the second wire insertion part 41, i.e., the height direction Z. Thus, in the housing 12 of this embodiment, an overlapping portion 70 is formed in which the second cover 24 and the extension 52 of the first cover 23 overlap in the height direction Z.

[0063] In the overlapping portion 70, the second cover 24 and the extension 52 of the first cover 23 abut against each other in the height direction Z, or are opposed to each other via a gap. In the overlapping portion 70, when the second cover 24 abuts against the extension 52 of the first cover 23, a larger wire storage space for the second wire insertion portion 41 can be ensured. On the other hand, in the overlapping portion 70, when the second cover 24 is separated from the extension 52 of the first cover 23, wear caused by mutual friction between the second cover 24 and the extension 52 of the first cover 23 can be suppressed.

[0064] The function of this embodiment will be explained.

[0065] Figure 5 This is a perspective view showing the state of the overlapping portion 70 of the secondary battery BT when it is contracted in the long side direction X of the casing 12. Figure 6 This is a perspective view showing the state of the overlapping portion 70 when the secondary battery BT expands in the long side direction X of the casing 12. (See image below.) Figure 6 As shown, when the secondary battery BT expands, the extension 52 of the first cover 23 and the second cover 24 are maintained in the overlapping portion 70.

[0066] In addition, such as Figure 5 and Figure 6As shown, the second locking part 53 is configured to be able to move relative to the second locked part 45 of the second wire insertion part 41 in the long side direction X of the housing 12, thereby enabling the first housing body 21 and the second housing body 22 to move relative to each other in the long side direction X according to the contraction and expansion of the secondary battery BT in the long side direction X.

[0067] The effects of this implementation method will be explained.

[0068] (1) The housing 12 has an overlapping portion 70, which is configured such that the first cover 23 and the second cover 24 overlap each other in the opening direction of the openings 36, 46 of the first wire insertion portion 31 and the second wire insertion portion 41. According to this structure, even if the distance between the first housing body 21 and the second housing body 22 along the length direction of the wire 11 widens due to thermal expansion of the secondary battery BT, the overlapping portion 70 can prevent a gap from forming between the first cover 23 and the second cover 24. Therefore, it is possible to prevent the wire 11 from being exposed between the first cover 23 and the second cover 24. In addition, by preventing a gap from forming between the first cover 23 and the second cover 24 by the overlapping portion 70, it is possible to prevent the wire 11 from flying out to the outside through the gap between the first cover 23 and the second cover 24.

[0069] (2) The first cover 23 has an extension 52 that extends to the position of the opening 46 covering the second wire insertion part 41 to form an overlapping part 70. According to this structure, the extension 52 of the first cover 23 can form an overlapping part 70 in which the first cover 23 and the second cover 24 overlap each other.

[0070] (3) The extension 52 of the first cover 23 has a second locking part 53 that locks against the second housing body 22 in the height direction Z of the housing 12, that is, in the direction of the openings 36 and 46. According to this structure, by locking the second housing body 22 with the second locking part 53, it is possible to suppress the floating of the extension 52 of the first cover 23, that is, the case where the extension 52 of the first cover 23 leaves the second wire insertion part 41 in the opening direction.

[0071] (4) A second locking part 53 is provided at the top end 52a of the extension part 52. According to this structure, by locking the second locking part 53 with the second housing body 22, the floating of the extension part 52 of the first cover 23 can be further suppressed.

[0072] (5) The second locking portion 53 is configured to be able to move relative to the second housing body 22 in the direction along the length of the wire 11. According to this structure, the extension portion 52 of the first cover 23 is locked to the second housing body 22, and the second housing body 22 can be moved relative to it according to the thermal expansion in the long side direction X of the secondary battery BT.

[0073] (6) The portion of the second cover 24 in the overlapping portion 70, that is, the end 24a of the long side direction X of the second housing body 22, is located inside the second wire insertion portion 41. According to this structure, the overlapping portion 70 of the first cover 23 and the second cover 24 can be formed without making the housing 12 larger in the opening direction of the second wire insertion portion 41.

[0074] This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other within the scope of technical inconsistency.

[0075] The number of first housing bodies 21 and the correspondingly varied number of first covers 23 are not limited to the above embodiments, and can be appropriately varied according to the size of the long side direction X of the secondary battery BT. For example, the number of first housing bodies 21 and the number of first covers 23 can each be set to one.

[0076] • It can also be changed to a structure in which the end 24a of the second cover 24 constituting the overlapping part 70 is located outside the second wire insertion part 41.

[0077] • In the overlapping part 70, it can also be changed to a structure in which the extension part 52 of the first cover 23 is located below the end part 24a of the second cover 24.

[0078] Alternatively, the second locking part 53 can be provided at a location other than the top end part 52a of the extension part 52 of the second cover 24.

[0079] In the above embodiment, the first locking part 51 of the first cover 23 may also be configured to be able to move relative to the first locking part 35 of the first housing body 21 in the direction along the length direction of the wire 11, that is, in the long side direction X of the housing 12.

[0080] In the above embodiment, in the overlapping portion 70 of the first cover 23 and the second cover 24, the upper first cover 23 has an extension portion 52. However, for example, the extension portion 52 may be omitted from the first cover 23 in the above embodiment. In this case, the second cover 24 located below the first cover 23 may have an extension portion extending in the longitudinal direction X to the first wire insertion portion 31 of the first housing body 21, and this extension portion of the second cover 24 overlaps with the first cover 23 in the height direction Z.

[0081] In the above embodiment, the overlapping portion 70 is formed in the region of the second wire insertion portion 41 in the long side direction X of the housing 12, but it is not limited to this. For example, the overlapping portion 70 may also be formed in the region between the first housing body 21 and the second housing body 22 in the long side direction X of the housing 12. Alternatively, the overlapping portion 70 may also be formed in the region of the first wire insertion portion 31 in the long side direction X of the housing 12.

[0082] In the above embodiment, the two openings 36 and 46 of the first wire insertion part 31 and the second wire insertion part 41 open in the same direction to each other, and their opening direction is set to the upper part of the height direction Z. However, the opening direction of the two openings 36 and 46 can also be in a direction other than the upper part. For example, the opening direction of the two openings 36 and 46 can also be set to the outer part of the width direction Y.

[0083] The first cover 23 can be separate from the first shell body 21, or it can be integrally formed with the first shell body 21. Similarly, the second cover 24 can be separate from the second shell body 22, or it can be integrally formed with the second shell body 22.

[0084] In the above embodiment, the first wire insertion portion 31 and the second wire insertion portion 41 are applied to the long side direction X of the housing 12 formed along the arrangement direction of the battery cells C. However, in addition, for example, the first wire insertion portion and the second wire insertion portion can also be applied to the width direction Y of the housing 12.

[0085] Explanation of reference numerals in the attached figures

[0086] 10 Battery wiring module

[0087] 11. Electrical wires

[0088] 12. Shell

[0089] 13 busbars

[0090] 14 First wire outlet section

[0091] 15 Second wire outlet section

[0092] 21 First Shell Body

[0093] 22 Second shell body

[0094] 23 First Cover

[0095] 24 Second Cover

[0096] 24a End (the part of the second cover in the overlapping section)

[0097] 31 First wire insertion part

[0098] 32 First connecting section

[0099] 33 First bottom wall section

[0100] 34 First side wall portion

[0101] 35 First stuck part

[0102] 36 Opening of the first wire insertion part

[0103] 41 Second wire insertion part

[0104] 42 Second connecting section

[0105] 43 Second bottom wall section

[0106] 44 Second side wall portion

[0107] 45 Second stuck part

[0108] 46. ​​Opening of the second wire insertion part

[0109] 51 First stop part

[0110] 52 Extension

[0111] 52a The top end of the extension

[0112] 53 Second locking part (locking part)

[0113] 61 Third stop

[0114] 70 Overlapping part

[0115] BT secondary battery

[0116] C battery cell

[0117] X-axis: Long side of the shell

[0118] Y-direction of the shell width

[0119] Z-axis of shell height

Claims

1. A battery wiring module assembled to a secondary battery, comprising: an electric wire electrically connected to the secondary battery; and a housing that houses the electric wire, the housing having: a first housing main body having a slot-like first electric wire insertion portion through which the electric wire passes; a second housing main body having a slot-like second electric wire insertion portion through which the electric wire passes; a first cover that covers an opening of the first electric wire insertion portion; and a second cover that covers an opening of the second electric wire insertion portion, the first electric wire insertion portion and the second electric wire insertion portion being arranged in a length direction of the electric wire, the opening of the first electric wire insertion portion and the opening of the second electric wire insertion portion opening in the same direction, the housing having an overlapping portion configured such that the first cover and the second cover overlap each other in the opening direction of the two openings, the first cover having an extension portion that extends to a position covering the opening of the second electric wire insertion portion to constitute the overlapping portion, the extension portion having a locking portion that locks with respect to the second housing main body in a direction along the opening direction of the two openings.

2. The battery wiring module according to claim 1, wherein the locking portion is provided at a tip end portion of the extension portion.

3. The battery wiring module according to claim 1 or claim 2, wherein the locking portion is configured to be relatively movable with respect to the second housing main body in a direction along the length direction of the electric wire.

4. The battery wiring module according to claim 1 or claim 2, wherein a portion of the second cover in the overlapping portion is located inside the second electric wire insertion portion. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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