Battery wiring module

Abstract

To provide a battery wiring module capable of facilitating component management.SOLUTION: A case 12 includes: a first case body 21 having a first wire insertion portion 31; a second case body 22 having a second wire insertion portion 41; a first cover 24 assembled to the first case body 21 and covering the first wire insertion portion 31; and a second cover 25 assembled to the second case body 22 and covering the second wire insertion portion 41. The first case body 21 and the second case body 22 are a separate body, and the first cover 24 and the second cover 25 are a separate body and the same component.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a battery wiring module.

Background Art

[0002] For example, as disclosed in Patent Document 1, in vehicles such as electric vehicles and hybrid vehicles, a high-voltage secondary battery mounted as a power source for driving is equipped with a battery wiring module. The battery wiring module of Patent Document 1 includes an electric wire electrically connected to the secondary battery and a case for housing the electric wire. The case of the battery wiring module has a plurality of case bodies arranged along the length direction of the electric wire and a plurality of covers corresponding to each of the plurality of case bodies. Each case body has a groove-shaped wire insertion portion through which the electric wire is passed, and each cover covers the wire insertion portion of the corresponding case body. The cover protects the electric wire passing through the wire insertion portion of the case body. According to such a configuration, for example, when the secondary battery thermally expands along the length direction of the electric wire, each case body and each cover move along the length direction of the electric wire following the thermal expansion of the secondary battery, so that the connection reliability between the secondary battery and the battery wiring module is high.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the battery wiring module of Patent Document 1, each cover is integrally provided with each case body via a hinge. However, due to design constraints or the like, there may be cases where each cover cannot be integrally provided with each case body. In such a case, since each cover becomes a separate part with respect to the case body, if the covers have different shapes from each other, parts management becomes complicated. In recent vehicles, secondary batteries tend to be large-sized. As the number of case bodies increases with the increase in the size of the secondary battery, in a configuration where the cover is not integral with the case body, the number of covers also increases, and parts management becomes particularly complicated.

[0005] Therefore, an object is to provide a battery wiring module that enables easy parts management.

Means for Solving the Problems

[0006] The battery wiring module of the present disclosure is a battery wiring module assembled to a secondary battery, and includes an electric wire electrically connected to the secondary battery and a case for housing the electric wire. The case includes a first case body having a first wire insertion portion through which the electric wire is passed, a second case body having a second wire insertion portion through which the electric wire is passed, a first cover assembled to the first case body and covering the first wire insertion portion, and a second cover assembled to the second case body and covering the second wire insertion portion. The first case body and the second case body are separate bodies, and the first cover and the second cover are separate bodies and are the same parts as each other.

Effects of the Invention

[0007] According to the present disclosure, it is possible to provide a battery wiring module that enables easy parts management.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

MODE FOR CARRYING OUT THE INVENTION

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be listed and described. The battery wiring module of the present disclosure is [1] A battery wiring module assembled to a secondary battery, comprising an electric wire electrically connected to the secondary battery and a case for housing the electric wire, the case having a first case body having a first wire insertion portion through which the electric wire is passed, a second case body having a second wire insertion portion through which the electric wire is passed, a first cover assembled to the first case body and covering the first wire insertion portion, and a second cover assembled to the second case body and covering the second wire insertion portion, wherein the first cover and the second cover have the same shape as each other.

[0010] According to this configuration, since the first cover and the second cover have the same shape as each other, the first cover and the second cover are not treated as separate parts in terms of parts management, and as a result, it is possible to facilitate parts management.

[0011] [2] The first wire insertion portion has a first bottom wall portion, a pair of first side wall portions extending from the first bottom wall portion, and a plurality of first engaged portions provided along the wire insertion direction in the first side wall portions. The second wire insertion portion has a second bottom wall portion, a pair of second side wall portions extending from the second bottom wall portion, and a plurality of second engaged portions provided along the wire insertion direction in the second side wall portions. The first cover has a plurality of first locking portions respectively locked to the plurality of first engaged portions. The second cover has a plurality of second locking portions respectively locked to the plurality of second engaged portions. The arrangement intervals of the plurality of first engaged portions and the arrangement intervals of the plurality of second engaged portions are set to be equal to each other.

[0012] According to this configuration, since the arrangement intervals of the plurality of first engaged portions and the arrangement intervals of the plurality of second engaged portions are equal to each other, even if the first cover and the second cover have the same shape, they can be appropriately locked to the first wire insertion portion and the second wire insertion portion respectively.

[0013] [3] The first wire insertion portion has a first bottom wall portion and a pair of first side wall portions extending from the first bottom wall portion. The second wire insertion portion has a second bottom wall portion and a pair of second side wall portions extending from the second bottom wall portion. The interval between the pair of first side wall portions and the interval between the pair of second side wall portions are set to be equal to each other.

[0014] According to this configuration, since the interval between the pair of first side wall portions and the interval between the pair of second side wall portions are equal to each other, even if the first cover and the second cover have the same shape, the first wire insertion portion and the second wire insertion portion can be appropriately covered by the first cover and the second cover respectively.

[0015] [4] The first case body has a plurality of the first wire insertion portions, and a plurality of first covers are provided corresponding to the plurality of first wire insertion portions respectively. The second case body has a plurality of the second wire insertion portions, and a plurality of second covers are provided corresponding to the plurality of second wire insertion portions respectively. All of the respective first covers and the respective second covers have the same shape.

[0016] According to this configuration, since all of the first covers and the second covers have the same shape, it is possible to facilitate parts management even in a configuration where the number of the first covers and the second covers is large.

[0017] [5] Each of the first cover and the second cover has a marking portion indicating an assembling orientation with respect to the corresponding first case body or the second case body. According to this configuration, even in a configuration where the first cover and the second cover have the same shape, it is possible to assemble the first cover and the second cover without misaligning the assembling orientations of the first cover and the second cover by the marking portions provided on each of the first cover and the second cover. Therefore, it is possible to smoothly perform the assembling work of the first cover and the second cover.

[0018] [6] The marking portions are respectively provided on the surfaces of the first cover and the second cover. According to this configuration, since the marking portions are respectively provided on the surfaces of the first cover and the second cover, it is easy to visually confirm the marking portions during the assembling work of the first cover and the second cover.

[0019] [7] The case includes a third case body having a plurality of third wire insertion portions through which the electric wire is passed, and a plurality of third covers assembled to the third case body and covering the plurality of third wire insertion portions respectively, and the plurality of third covers have the same shape as each other.

[0020] According to this configuration, since the plurality of third covers have the same shape as each other, it is possible to facilitate parts management even in a case where the total number of covers increases by providing the plurality of third covers in addition to the first cover and the second cover.

[0021] [Details of Embodiments of the Present Disclosure] A specific example of the battery wiring module of the present disclosure will be described below with reference to the drawings. In each drawing, for convenience of explanation, a part of the configuration may be exaggerated or simplified. Also, the dimensional ratios of each part may be different in each drawing. Note that the present invention is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0022] As shown in FIG. 1, the battery wiring module 10 of the present embodiment is, for example, assembled to a secondary battery BT mounted on an electric vehicle or a hybrid vehicle. The secondary battery BT supplies power to a traveling motor of a vehicle (not shown). Further, the secondary battery BT receives power from the traveling motor or the power generation motor according to the charge state and the driving state of the vehicle.

[0023] The secondary battery BT includes a plurality of battery cells C. The secondary battery BT has, for example, a substantially rectangular parallelepiped shape by arranging a plurality of battery cells C side by side in one direction. The battery wiring module 10 is attached to one side surface of the secondary battery BT. In the following description, the surface of the secondary battery BT on which the battery wiring module 10 is attached is referred to as the upper surface, and the side of the battery wiring module 10 with respect to the secondary battery BT is referred to as the upper side for explanation. Also, in the XYZ axes orthogonal to each other in the drawing, the X axis represents the longitudinal direction X of the case 12 of the battery wiring module 10, the Y axis represents the width direction Y of the case 12, and the Z axis represents the height direction Z of the case 12. Each battery cell C is arranged side by side along the longitudinal direction X of the case 12.

[0024] As shown in FIGS. 1 and 2, the battery wiring module 10 includes a plurality of electric wires 11 electrically connected to the secondary battery BT and a case 12 that houses each electric wire 11. Note that in FIG. 1, the illustration of the electric wire 11 is omitted.

[0025] In addition, the battery wiring module 10 of the present embodiment includes, for example, a plurality of bus bars 13 supported by a case 12. Each bus bar 13 is, for example, arranged in a plurality along the longitudinal direction X of the case 12 on both sides in the width direction Y of the case 12. Each bus bar 13 has a positive terminal and a negative terminal (not shown) provided on the upper surface of each battery cell C connected thereto.

[0026] As shown in FIG. 2, each bus bar 13 is electrically connected to a corresponding electric wire 11. Each electric wire 11 is inserted through the inside of the case 12 along the longitudinal direction X. A part of the plurality of electric wires 11 is led out of the case 12 from a first electric wire lead-out portion 14 formed at one end in the longitudinal direction X of the case 12, and the remaining plurality of electric wires 11 are led out of the case 12 from a second electric wire lead-out portion 15 formed at the other end in the longitudinal direction X of the case 12.

[0027] (Case 12) As shown in FIG. 1, the case 12 includes a first case body 21, a second case body 22, and a third case body 23 arranged in the longitudinal direction X of the case 12, and first covers 24, second covers 25, and third covers 26 corresponding to the first case body 21, the second case body 22, and the third case body 23, respectively. The third case body 23 is arranged between the first case body 21 and the second case body 22 in the longitudinal direction X of the case 12. Also, the third cover 26 is located between the first cover 24 and the second cover 25 in the longitudinal direction X of the case 12. Note that the first case body 21 has the above-described first electric wire lead-out portion 14, and the third case body 23 has the above-described second electric wire lead-out portion 15.

[0028] The first case body 21 and the first cover 24 are separate from each other. The second case body 22 and the second cover 25 are separate from each other. The third case body 23 and the third cover 26 are separate from each other. Also, the first case body 21, the second case body 22, and the third case body 23 are separate from each other. Further, the first cover 24, the second cover 25, and the third cover 26 are separate from each other. Note that the first case body 21, the second case body 22, the third case body 23, the first cover 24, the second cover 25, and the third cover 26 are made of, for example, synthetic resin.

[0029] (First case body 21) As shown in FIG. 2, the first case body 21 has a groove-shaped first wire insertion portion 31 through which the wire 11 is passed. Note that FIG. 2 is a plan view of the battery wiring module 10 with the first cover 24, the second cover 25, and the third cover 26 removed.

[0030] The first wire insertion portion 31 extends along the longitudinal direction X of the case 12. Also, the first case body 21 of the present embodiment has, for example, two first wire insertion portions 31 arranged in the width direction Y of the case 12. The two first wire insertion portions 31 are connected to each other by a first connecting portion 32.

[0031] 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 engaged portions 35 provided on each first side wall portion 34. The pair of first side wall portions 34 face each other in the width direction Y. The first wire insertion portion 31 forms a groove shape that opens upward by the first bottom wall portion 33 and each first side wall portion 34. The wire 11 is inserted between the first side wall portions 34.

[0032] The plurality of first engaged portions 35 are provided so as to protrude from the outer surface of each first side wall portion 34. Also, each first engaged portion 35 provided on one first side wall portion 34 and each first engaged portion 35 provided on the other first side wall portion 34 are provided at the same position in the longitudinal direction X of the case 12.

[0033] (Second case body 22) The second case body 22 has a groove-shaped second wire insertion portion 41 through which the wire 11 is passed. The second wire insertion portion 41 extends along the longitudinal direction X of the case 12. Further, the first case body 21 of the present embodiment has, for example, two second wire insertion portions 41 arranged in the width direction Y of the case 12. The two second wire insertion portions 41 are connected to each other by a second connecting portion 42.

[0034] 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 second engaged portions 45 provided on each second side wall portion 44. The pair of second side wall portions 44 face each other in the width direction Y. The second wire insertion portion 41 forms a groove shape that opens upward by the second bottom wall portion 43 and each second side wall portion 44. The wire 11 is inserted between the second side wall portions 44.

[0035] The plurality of second engaged portions 45 are provided so as to protrude from the outer surface of each second side wall portion 44. Further, each second engaged portion 45 provided on one second side wall portion 44 and each second engaged portion 45 provided on the other second side wall portion 44 are provided at the same position in the longitudinal direction X of the case 12.

[0036] (Third case body 23) The third case body 23 has a groove-shaped third wire insertion portion 51 through which the wire 11 is passed. The third wire insertion portion 51 extends along the longitudinal direction X of the case 12. Further, the third case body 23 of the present embodiment has, for example, two third wire insertion portions 51 arranged in the width direction Y of the case 12. The two third wire insertion portions 51 are connected to each other by a third connecting portion 52. Further, the first wire insertion portion 31, the second wire insertion portion 41, and the third wire insertion portion 51 are arranged side by side along the longitudinal direction X of the case 12.

[0037] Each third wire insertion portion 51 has a third bottom wall portion 53, a pair of third side wall portions 54 extending upward from the third bottom wall portion 53, and a plurality of third engaged portions 55 provided on each of the third side wall portions 54. The pair of third side wall portions 54 face each other in the width direction Y. The third wire insertion portion 51 forms a groove shape that opens upward by the third bottom wall portion 53 and each of the third side wall portions 54. Also, the third wire insertion portion 51 is open upward. A wire 11 is inserted between the third side wall portions 54.

[0038] The plurality of third engaged portions 55 are provided so as to protrude from the outer surface of each of the third side wall portions 54. Also, each of the third engaged portions 55 provided on one of the third side wall portions 54 and each of the third engaged portions 55 provided on the other third side wall portion 54 are provided at the same position as each other in the longitudinal direction X of the case 12.

[0039] (First Cover 24) As shown in FIGS. 1 and 3, two first covers 24 of the present embodiment are provided corresponding to the two first wire insertion portions 31 in the first case body 21. The first cover 24 is assembled to the first case body 21 in a manner that covers the upper part of the first wire insertion portion 31. The first cover 24 has a first locking portion 61 that is locked to the first locked portion 35 of the first wire insertion portion 31. A plurality of first locking portions 61 are provided corresponding to the plurality of first locked portions 35 of the first wire insertion portion 31, respectively. The first locking portion 61 is locked to the first locked portion 35 in the direction along the opening direction of the first wire insertion portion 31, that is, in the height direction Z. Thereby, the first cover 24 is assembled to the first wire insertion portion 31. Note that the first locking portions 61 are provided on both sides in the width direction Y of the first cover 24.

[0040] (Second Cover 25) As shown in FIGS. 1 and 2, two second covers 25 of the present embodiment are provided corresponding to the two second wire insertion portions 41 in the second case body 22. The second cover 25 is assembled to the second case body 22 in a manner of covering the upper part of the second wire insertion portion 41. The second cover 25 has a second locking portion 71 that is locked to the second locked portion 45 of the second wire insertion portion 41. A plurality of second locking portions 71 are provided corresponding to the plurality of second locked portions 45 of the second wire insertion portion 41, respectively. The second locking portion 71 is locked to the second locked portion 45 in the direction along the opening direction of the second wire insertion portion 41, that is, in the height direction Z. Thereby, the second cover 25 is assembled to the second wire insertion portion 41. Note that the second locking portions 71 are provided on both sides in the width direction Y of the second cover 25.

[0041] (The third cover 26) As shown in FIGS. 1 and 4, two third covers 26 of the present embodiment are provided corresponding to the two third wire insertion portions 51 in the third case body 23. The two third covers 26 have the same shape as each other. The third cover 26 is assembled to the third case body 23 in a manner of covering the upper part of the third wire insertion portion 51. The third cover 26 has a third locking portion 81 that is locked to the third locked portion 55 of the third wire insertion portion 51. The third locking portion 81 is locked to the third locked portion 55 in the direction along the opening direction of the third wire insertion portion 51, that is, in the height direction Z. Thereby, the third cover 26 is assembled to the third wire insertion portion 51. Note that the third locking portions 81 are provided on both sides in the width direction Y of the third cover 26.

[0042] The first cover 24 extends toward the third case body 23 side in the longitudinal direction X of the case 12, and one end portion in the longitudinal direction X of the first cover 24 is located above the third wire insertion portion 51. The first locking portion 61 provided at the same end portion in the longitudinal direction X of the first cover 24 is locked to a part of the plurality of third locked portions 55. The end portion of the third cover 26 on the first cover 24 side is located below the first cover 24.

[0043] The second cover 25 extends toward the third case body 23 side in the longitudinal direction X of the case 12, and one end portion of the second cover 25 in the longitudinal direction X is located above the third wire insertion portion 51. The second locking portion 71 provided at the same end portion of the second cover 25 in the longitudinal direction X is locked to a part of the plurality of third locked portions 55. The end portion of the third cover 26 on the second cover 25 side is located below the second cover 25.

[0044] As described above, the case 12 of the present embodiment has a total of six covers that cover the portions through which the wires 11 are inserted. And, among the six covers, the two first covers 24 and the two second covers 25 are all of the same shape. That is, each first cover 24 and each second cover 25 are the same component. Therefore, in the longitudinal direction X of the case 12, the arrangement intervals of the plurality of first locking portions 61 of the first cover 24 and the arrangement intervals of the plurality of second locking portions 71 of the second cover 25 are equal to each other.

[0045] Also, as shown in FIG. 2, in the longitudinal direction X of the case 12, the arrangement intervals of the plurality of first locked portions 35 of the first wire insertion portion 31 and the arrangement intervals of the plurality of second locked portions 45 of the second wire insertion portion 41 are equal to each other. Further, the interval in the width direction Y between the pair of first side wall portions 34 in the first wire insertion portion 31 and the interval in the width direction Y between the pair of second side wall portions 44 in the second wire insertion portion 41 are equal to each other.

[0046] As shown in FIG. 1, each first cover 24 and each second cover 25 are provided with, for example, one mark portion 91. The mark portion 91 is provided on the surface 24a of each first cover 24 and the surface 25a of each second cover 25. The surface 24a of the first cover 24 is, for example, the upper surface of the first cover 24. Also, the surface 25a of the second cover 25 is, for example, the upper surface of the second cover 25. The mark portion 91 indicates the assembling orientation of the first cover 24 and the assembling orientation of the second cover 25 in a plan view, that is, in a view in the height direction Z. The mark portion 91 is configured to be visible by being formed in a concave or convex shape on the surface 24a of the first cover 24 and the surface 25a of the second cover 25. Further, the mark portion 91 has a shape with a direction, and in the present embodiment, for example, it has a triangular shape in a plan view.

[0047] A mark portion 92 is provided on the surface 26a of the third cover 26. The surface 26a of the third cover 26 is, for example, the upper surface of the third cover 26. The mark portion 92 indicates the assembling orientation of the third cover 26 in a plan view, that is, in a view in the height direction Z. The mark portion 92 is configured to be visible by being formed in a concave or convex shape on the surface 26a of the third cover 26. The mark portion 92 of the third cover 26 has, for example, a shape different from that of the mark portions 91 of the first cover 24 and the second cover 25. Also, the mark portion 91 has a shape with a direction.

[0048] The operation of the present embodiment will be described. As shown in FIG. 5, when assembling the electric wire 11 to the case 12, the first to third case bodies 21 to 23 are arranged on the workbench S. At this time, the insertion portion Sa protruding from the upper surface of the workbench S is inserted between the pair of first electric wire insertion portions 31, between the pair of second electric wire insertion portions 41, and between the pair of third electric wire insertion portions 51, respectively. Note that in FIG. 5, the illustration of the electric wire 11 is omitted.

[0049] After the electric wire 11 is housed in the first to third case bodies 21 to 23, the first to third covers 24 to 26 are assembled. Here, when assembling the first cover 24 and the second cover 25, the first cover 24 and the second cover 25 are assembled based on a plurality of mating target mark portions Sb provided at a predetermined position on the upper surface of the insertion portion Sa. The mating target mark portion Sb has a shape corresponding to the mark portion 91 of the first cover 24 and the second cover 25. For example, the mating target mark portion Sb has the same shape and the same size as the mark portion 91 in a plan view. When assembling the first cover 24, the mark portion 91 of the first cover 24 is faced toward the mating target mark portion Sb. Also, when assembling the second cover 25, the mark portion 91 of the second cover 25 is faced toward the mating target mark portion Sb. Thereby, it is possible to assemble the first cover 24 and the second cover 25, which have the same shape as each other, without misaligning the assembling directions.

[0050] Also, when assembling each third cover 26, each third cover 26 is assembled based on a plurality of mating target mark portions Sc provided at a predetermined position on the upper surface of the insertion portion Sa. The mating target mark portion Sc has a shape corresponding to the mark portion 92 of the third cover 26. For example, the mating target mark portion Sc has the same shape and the same size as the mark portion 92 in a plan view. When assembling each third cover 26, the mark portion 92 is faced toward the mating target mark portion Sc. Thereby, it is possible to assemble the two third covers 26, which have the same shape as each other, without misaligning the assembling directions.

[0051] The effects of the present embodiment will be described. (1) Since each first cover 24 and each second cover 25 have the same shape as each other, the first cover 24 and the second cover 25 do not need to be treated as separate parts in terms of parts management. As a result, it becomes possible to facilitate parts management. Also, in the present embodiment, since each third cover 26 has the same shape as each other, although the case 12 includes six covers for the electric wire 11, the types of parts of the covers are suppressed to two types.

[0052] (2) The first wire insertion portion 31 has a first bottom wall portion 33, a pair of first side wall portions 34 extending from the first bottom wall portion 33, and a plurality of first engaged portions 35 provided along the insertion direction of the wire 11 on the first side wall portions 34. The second wire insertion portion 41 has a second bottom wall portion 43, a pair of second side wall portions 44 extending from the second bottom wall portion 43, and a plurality of second engaged portions 45 provided along the insertion direction of the wire 11 on the second side wall portions 44. The first cover 24 has a plurality of first locking portions 61 respectively locked to the plurality of first engaged portions 35, and the second cover 25 has a plurality of second locking portions 71 respectively locked to the plurality of second engaged portions 45. And the arrangement intervals of the plurality of first engaged portions 35 and the arrangement intervals of the plurality of second engaged portions 45 are set to be equal to each other. According to this configuration, since the arrangement intervals of the plurality of first engaged portions 35 and the arrangement intervals of the plurality of second engaged portions 45 are equal to each other, even if the first cover 24 and the second cover 25 have the same shape, they can be appropriately locked to the first wire insertion portion 31 and the second wire insertion portion 41 respectively.

[0053] (3) The interval between the pair of first side wall portions 34 in the first wire insertion portion 31 and the interval between the pair of second side wall portions 44 in the second wire insertion portion 41 are set to be equal to each other. According to this configuration, even if the first cover 24 and the second cover 25 have the same shape, it is possible to appropriately cover the first wire insertion portion 31 and the second wire insertion portion 41 with the first cover 24 and the second cover 25 respectively.

[0054] (4) The first case body 21 has a plurality of first wire insertion portions 31, and a plurality of first covers 24 are provided corresponding to the plurality of first wire insertion portions 31 respectively. Also, the second case body 22 has a plurality of second wire insertion portions 41, and a plurality of second covers 25 are provided corresponding to the plurality of second wire insertion portions 41 respectively. According to this configuration, since all the first covers 24 and the second covers 25 have the same shape, it is possible to facilitate parts management even in the configuration of the case 12 where the number of the first covers 24 and the second covers 25 is large.

[0055] (5) Each of the first cover 24 and the second cover 25 has a marking portion 91 indicating the assembly orientation with respect to the corresponding first case body 21 or second case body 22. According to this configuration, even in the configuration where the first cover 24 and the second cover 25 have the same shape, the marking portions 91 provided on each of the first cover 24 and the second cover 25 enable the first cover 24 and the second cover 25 to be assembled without misidentifying their assembly orientations. Therefore, the assembly work of the first cover 24 and the second cover 25 can be smoothly performed.

[0056] (6) The marking portions 91 are respectively provided on the surface 24a of the first cover 24 and the surface 25a of the second cover 25. According to this configuration, since the marking portions 91 are respectively provided on the surface 24a of the first cover 24 and the surface 25a of the second cover 25, it becomes easy to visually confirm the marking portions 91 during the assembly work of the first cover 24 and the second cover 25.

[0057] (7) The case 12 includes a third case body 23 having a plurality of third wire insertion portions 51 through which the electric wire 11 is passed, and a plurality of third covers 26 assembled to the third case body 23 and covering the plurality of third wire insertion portions 51 respectively. And the plurality of third covers 26 are of the same shape as each other. According to this configuration, even in the configuration of the case 12 including a plurality of third covers 26 in addition to the first cover 24 and the second cover 25, which increases the total number of covers, it becomes possible to facilitate parts management.

[0058] This embodiment can be implemented with the following modifications. This embodiment and the following modification examples can be implemented in combination with each other within a technically non - conflicting range. · The number of case bodies in the case 12 is not limited to that in the above - described embodiment, and may be appropriately changed according to the size of the longitudinal direction X of the secondary battery BT or the like.

[0059] · The case 12 of the above embodiment has a total of six covers, namely, the first to third covers 24 to 26, which cover the part through which the electric wire 11 is inserted. However, the number of the covers is not limited to the above embodiment and may be appropriately changed according to the size of the secondary battery BT in the longitudinal direction X or the like.

[0060] · In the above embodiment, each first cover 24 and each second cover 25 have the same shape as each other. However, the present invention is not limited thereto, and at least one of the plurality of first covers 24 and at least one of the plurality of second covers 25 may have the same shape.

[0061] · In the above embodiment, the electric wire 11 is wired along the longitudinal direction X of the case 12 along the parallel arrangement direction of the battery cells C. However, for example, the electric wire 11 may be wired along the width direction Y of the case 12.

Explanation of Reference Numerals

[0062] 10 Battery Wiring Module 11 Electric Wire 12 Case 13 Bus Bar 14 First Electric Wire Lead-Out Port 15 Second Electric Wire Lead-Out Port 21 First Case Body 22 Second Case Body 23 Third Case Body 24 First Cover 24a Surface 25 Second Cover 25a Surface 26 Third Cover 26a Surface 31 First Electric Wire Insertion Port 32 First Connection Port 33 First Bottom Wall 34 First Side Wall 35 First Locked Port 41 Second Electric Wire Insertion Port 42 Second Connection Port 43 Second Bottom Wall 44 Second Side Wall 45 Second Locked Port 51 Third wire insertion part 52 Third connecting part 53 Third bottom wall part 54 Third side wall part 55 Third engaged part 61 First locking part 71 Second locking part 81 Third locking part 91 Marking part 92 Marking part BT Secondary battery C Battery cell S Workbench Sa Insertion part Sb Opposite-side marking part Sc Opposite-side marking part X Longitudinal direction of case 12 Y Width direction of case 12 Z Height direction of case 12

Claims

1. A battery wiring module to be assembled to a secondary battery, An electric wire electrically connected to the secondary battery; A case for accommodating the electric wire, The case is a first case body having a first wire insertion portion through which the electric wire is passed; a second case body having a second wire insertion portion through which the electric wire is passed; a first cover attached to the first case body and covering the first wire insertion portion; a second cover attached to the second case body and covering the second wire insertion portion; having The first case body and the second case body are separate bodies, The battery wiring module, wherein the first cover and the second cover are separate bodies and are the same part.

2. the first electric wire insertion portion has a first bottom wall portion, a pair of first side wall portions extending from the first bottom wall portion, and a plurality of first engaged portions provided on the first side wall portions along an insertion direction of the electric wire, the second electric wire insertion portion has a second bottom wall portion, a pair of second side wall portions extending from the second bottom wall portion, and a plurality of second engaged portions provided on the second side wall portions along an insertion direction of the electric wire, the first cover has a plurality of first engaging portions that are respectively engaged with the plurality of first engaged portions, the second cover has a plurality of second engaging portions that are respectively engaged with the plurality of second engaged portions, The battery wiring module according to claim 1 , wherein an arrangement interval between the first engaged portions and an arrangement interval between the second engaged portions are set to be equal to each other.

3. The first wire insertion portion has a first bottom wall portion and a pair of first side wall portions extending from the first bottom wall portion, The second wire insertion portion has a second bottom wall portion and a pair of second side wall portions extending from the second bottom wall portion, 3 . The battery wiring module according to claim 1 , wherein a distance between the pair of first side wall portions and a distance between the pair of second side wall portions are set to be equal to each other.

4. The first case body has a plurality of the first electric wire insertion portions, The first covers are provided in a plurality of positions corresponding to the plurality of first wire insertion portions, The second case body has a plurality of the second electric wire insertion portions, The second covers are provided in a plurality of locations corresponding to the plurality of second wire insertion portions, The battery wiring module according to claim 1 , wherein the first covers and the second covers are all formed in the same shape.

5. The battery wiring module according to claim 1 , wherein each of the first cover and the second cover has a mark portion indicating an assembly orientation relative to the corresponding first case body or the second case body.

6. The battery wiring module according to claim 5 , wherein the mark portion is provided on a surface of the first cover and a surface of the second cover.

7. the case includes a third case body having a plurality of third wire insertion portions through which the electric wires are passed, and a plurality of third covers assembled to the third case body and respectively covering the plurality of third wire insertion portions, The battery wiring module according to claim 1 , wherein the third covers have the same shape as one another.

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